A person buys some pen and pencil. The pen costs TK. 7 each and pencils cost TK. 3 each. If he spends exactly TK. 81 and buys maximum number of pen possible under these conditions, what is the ratio to pencil ?

A student scored 80 marks in his first test. After taking the third test, his average dropped from 82 to78 . W...

The price of rice in the year 1995 has increased by 10% forms that of the previous year . In 1996 the price ha...

The area of a rectangle is 200 sq. meter . If the length is twice the breadth, what is the perimeter of the re...

In an office, the ratio of female to male employees is 1:4 . What percentage of the employees are male ?

If 4 workers can do a job in 48 days, how long will it take 3 workers to finish the same job ?

10% of 3000 is how much more than 5% of 3000 ?