A book sells for TK. 65. This price gives the seller a profit of 30% on his cost. What will be the new selling price if he cuts his profit to 10% of its cost ?

A wheel makes 1000 revolutions in covering a distance of 88 km. The diameter of the wheel is -

The average age of 12 students is 20 years. If the age of one more student is included, the average decreases...

A mixture of 20 kg of spirit and water contains 10% water. How much water must be added to this mixture to rai...

A number consists of two digits. The sum of the digits is 9. If 63 is subtracted from the number its digits ar...

If 4 times an integer x is increased by 10 , the result is always greater than 18 and less than 34 . what is t...

when a positive integer K is divided by 6 , the remainder is 3 , what is the remainder when 5 k is divided by...