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2151 Math

A tank is filled in 5 hours by three pipes A,B and C The pipe C is twice as fast as B and B is twice as fast as A How much time will pipe A alone take to fill the tank?

A)20 hours

B)25 hours

C)35 hours

D)None of these

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2152 Math

What is the rate of simple interest for the first 4 years if the sum of TK. 360 becomes TK. 540 in 9 years and the rate of interest for the last 5 years is 6% ?

A)4%

B)5%

C)3%

D)6%

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2153 Math

What is the amount of equal installment , if a sum of TK. 1428 due 2 years hence has to be completely has to be completely repaid in 2 equal annual installments starting next year?

A)TK. 700

B)Tk. 800

C)Tk. 650

D)cannot be determined

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2154 Math

There is provision of food in fort for 1200 soldiers for 60 days .After 15 days . 200 soldiers leave the fort .Remaining food will last for how many days?

A)56 days

B)50 days

C)48 days

D)54 days

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2155 Math

If 2 men or 3 women or 4 boys can do a piece of work in 52 days, then the same piece of work will be done by 1 man . 1 woman and 1 boy in -

A)48 days

B)36 days

C)45 days

D)50 days

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2156 Math

In a zoo, there are Rabbits and Pigeons. It heads are counted s, there are 200 and if legs are counted there are 580. How many pigeons are there ?

A)90

B)100

C)110

D)120

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2157 Math

Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house is -

A)9-Jan

B)9-May

C)9-Aug

D)9-Apr

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2158 Math

If the perimeter of a certain rectangle is 76 m and its area is 360 , then what is the length of its shortest side ?

A)13

B)15

C)18

D)10

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2159 Math

The simple interest received on a sum of money at the end of 10 years is two times of the principle. At the same rate of interest, what would be the ratio of principal and compound interest received at the end of two years?

A)25:11:00

B)20:11

C)20:09

D)None of these

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2160 Math

A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions . The number of choices available to him is .

A)140

B)196

C)280

D)346

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2161 Math

For what value of x is

A)2

B)3

C)4

D)6

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2162 Math

Three dice are thrown together . Find the probability of getting a total of at least 6 ?

A)

B)

C)

D)

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2163 Math

In a college Rahim scored 80 marks out of 150 in History and 95 marks out of 120 in English . If he wants to score 70% marks in 3 subjects, find the minimum marks she should score in Geography out of 100.

A)70

B)55

C)76

D)None of these

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2164 Math

If x .

A)12

B)6

C)8

D)10

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2165 Math

x can do a piece of work in 20 days and Y can do the 1/7th of the same work in 5 days. In how many days together they can complete the 11/14th of the total work?

A)15 days

B)20 days

C)10 days

D)12 days

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2166 Math

The circumference of the circle and teh perimeter of the square is equal and the ratio between the diameter of the circle and the side of the square is 7 :11 . What is the area of the circle ?

A)154

B)160

C)132

D)Can't be determined

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2167 Math

The average weight of teacher is also included, then the average weight is increased by 200 grams. Find the weight of the teacher?

A)93.6 kg

B)94 kg

C)93.4 kg

D)94.6 kg

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2168 Math

A train can cross another train of equal length coming form the opposite direction with the speed of 108 km/h in 3 minutes . The speed of the other train is 90 km/h. Find the length of the train .

A)5940 m

B)5490 m

C)4950 m

D)4590 m

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2169 Math

A can complete a piece of work in 12 days, A, B and C can complete the work in 6 days. Efficiency of B is 0.5 times the efficiency of A. In how many days C can complete the work alone?​

A)24 days

B)10 days

C)16 days

D)12 days

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2170 Math

A shopkeeper sold and item at 20% profit and another item at 10% loss. If the cost price of both the items is same, find overall profit percent.

A)7.55%

B)5%

C)6.00%

D)6.50%

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2171 Math

8 males and 6 females can do a piece of work in 5 days, 5 males and 6 females can complete the same work in 7 days . How many days will a female take to do the job, if she works alone?

A)135 days

B)142 days

C)110 days

D)126 days

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2172 Math

A is 30% more efficient than E How much time will they , working together , take to complete a job which A alone could have done in 23 days?

A)13 days

B)15 days

C)10 days

D)None of these

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2173 Math

The area of lawn is 460 . If the length is 15 percent more than the breadth of the rectangular field What is the length of the field?

A)15 m

B)26 m

C)34.5 m

D)None of these

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2174 Math

A boat can travel form point A to point B and return back to point a in 9 hours. Speed of the boat in still water is 8 km/h and the speed of the stream is 4 km/h. Find the distance between A and B.

A)18 km

B)27 km

C)36 km

D)45 km

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2175 Math

A 10% monthly salary increase resulted in a TK. 9000 per year increase in salary for an employee. What was his monthly salary before the increase?

A)Tk. 5000

B)Tk. 9000

C)TK. 7500

D)TK. 12000

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2176 Math

When a certain number is divided by 7 ,the remainder is 0. if the remainder is not 0 when the number is not 0 when the number is divided by 14 , then the remainder must be -

A)7

B)5

C)3

D)8

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2177 Math

A mixture of 20 kg of sprit and water contains 10% water. How much water must she added to mixture to raise the percentage of water to 25%

A)2

B)4

C)5 days

D)6

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2178 Math

X and Y start a business by investing a certain amount in the ratio 9: 16 . Both of them invest for an equal period of time . At the end of the term , X's share of profit is what per cent less than that of Y?

A)

B)60

C)

D)

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2179 Math

The average attendance of a college for the first three days of a week is 325 and first four days is 320. How many were present on the fourth day?

A)300

B)315

C)305

D)350

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2180 Math

TK. 355 has been divided among A, B,C in such a way that a had TK. 20 more than B and C had Tk. 15 more than B and C had Tk. 15 more than A How much was C's share?

A)Tk. 135

B)Tk. 100

C)TK. 120

D)Tk. 150

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2181 Math

If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?

A)13:42

B)19:43

C)15:42

D)17:43

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2182 Math

By what percentage above the cost price ,a fan should be sold if a shopkeeper wants to make a profit of Tk. 500 and the marked price of the article is TK. 6000 which is 50% above the cost price ?

A)25.00%

B)12.50%

C)20.00%

D)None of these

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2183 Math

Out of two numbers, 4 times the smaller one is less than 3 times the larger one by 5, if the sum of the numbers is larger than 6 times their difference by 6, find the two numbers

A)55 and 58

B)23 and 28

C)59 and 43

D)65 and 67

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2184 Math

The sum of the squares of these three numbers is 532 and the ratio of the first and the second as also of the second and the third is 3 : 2. Then the first number is -

A)18

B)6

C)12

D)20

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2185 Math

Pipe P can fill and empty tank in 4 hours but pipe Q can completely empty the same tank in 8 hours. But the pipes were opened alternately after every two hours starting with pipe P then in how many hours, the tank was completely filled ?

A)6 hours

B)5 hours

C)10 hours

D)12 hours

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2186 Math

The average age of A, B And C sis 30 years. If the difference between B's age and A's age is same as the difference between C's age and B's age . If D is 40 years older than B then what is the sum of the age B and D?

A)130 years

B)60 years

C)75 years

D)100 years

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2187 Math

The humidity of air measured in percentage is called -

A)Absolute humidity

B)Relative humidity

C)Specific humidity

D)All of these

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2188 Math

Kalam has three daughters; Shaila , Meena and Tina. Three years ago, when Kalam was twice as old as Tina , he was 30 years older than sMeena Now he is 47 years older than Shaila In 4 years. Shaila will be half as old as Tina What is the sum of the current ages of Kalam and his three daughters ?

A)138

B)144

C)154

D)180

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2189 Math

In a garden , there are 10 rows and 12 columns of mango trees. The distance between two trees is 2 meters and a distance of one meter is left from all sides of the boundary of the garden . What is the length of the garden ?

A)20 m

B)22 m

C)24 m

D)26 m

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2190 Math

Due to reduction in the bus price by 15% , the number of passengers on a certain route increased by 40% . What will be the percentage increase in revenue?

A)17

B)18

C)19

D)20

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2191 Math

Hassan completed 1/3 portion of a job in 8 days and left. Then Jashim was recruited and he worked for 5 days and left the job. Hassan again joined and completed the rest of the Josim require to complete the job alone?

A)10 days

B)24 days

C)30 days

D)36 days

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2192 Math

Jerin has 40% more books than Rashed However, if she gives 45 of her books to Rashed, then Rashed will have 10% more books than Jerin . How many books did Jerin begin with ?

A)140

B)175

C)245

D)385

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2193 Math

Alim was hired for a job for 7 days . Each day, he was paid Tk. 10 more than what he was paid for the previous day of work . The total amount he was paid in the first 4 days of work equaled the total amount he was paid in the last 3 days. What was his starting pay?

A)TK. 90

B)Tk. 138

C)Tk. 153

D)Tk. 160

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2194 Math

The captain of Bangladesh Cricket Team is 26 years old and the wicket keeper is 4 years older . If the ages of these two are excluded,the average age of the remaining players is one year less than the average age of the whole team . What is the average age of the team ?

A)21

B)22

C)23

D)None

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2195 Math

A cement mixture is composed of 3 elements. Weight, 1/3 is water and the remaining 12 pounds of the mixture is gravel .What is the weight of the entire mixture in pounds?

A)60

B)80

C)90

D)180

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2196 Math

If w is 10 percent less than x, and y is 30 percent less than z , then why is what percent less than xz?

A)10%

B)20%

C)37%

D)40%

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2197 Math

The operation @ is defined for all integers x and y as x @ y=xy-y. If x and y are positive integers, which of the following cannot be Zero?

A)x@y

B)y@x

C)(x-y)@y

D)(x+1)@y

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2198 Math

Anik travels 35 kilometers (km) partly at 4km /h and partly at 5 km/h. If he covers the distance at 5 km/h he could cover 2 km more in the same time. The time taken to cover the whole distance at original rate is -

A)4hr 30 min

B)5hr 24 min

C)7hr 24 min

D)9 hr 24 min

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2199 Math

Kalam bought two varieties of rice , costing Tk. 50 /kg and Tk. 60 /kg each , and mixed them in some ratio. Then he sold the mixture at Tk. 70/kg. Making a profit of 20% .What was the ratio of the mixture?-

A)1:10

B)1:05

C)2:07

D)3:08

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2200 Math

In a class, 120 students are male and 100 students are female , 25% of the male students and 20% of the female students are engineering students . 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam ?

A)5%

B)10%

C)15%

D)22%

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