In a city, 40% of the adults are illiterate while 85% of the children are literate. If the ratio of the adults to that of the children is 2:3, then what percent of the population is literate?

The number of boys in a class is three times the number of girls. Which one of the following numbers cannot re...

In a family, each daughter has the same number of brothers as she has sisters and each son has twice as many s...

A man has Tk 480 in the denominations of one-taka notes, five-taka notes and ten-taka notes. The number of not...

The greatest number that exactly divides 105, 1001 and 2436 is :

30 labourers, working 7 hours a day can finish a piece of work in 18 days. If the ladourers work 6 hours a day...

In what ratio must a grocer mix two varieties of tea worth Tk. 60 a kg and Tk. 65 a kg so that by selling the...