The contents of a certain box consist of 9 apples and 27 oranges . How many oranges must be removed from the box so that 70% of the pieces of fruits in the box will be apples ?

If Anwar's salary is 25% greater than that of Babu, what is the ratio of the salary of fBabu and Anwar ?

In a Container,there are 2 green marbles and 2 red marbles. You randomly pick two marbles . What is the probab...

A man buys pen at the rate of TK. 420 per 100 pieces and sells them at TK. 60 per dozen . If the profit is TK....

If m and n are positive integers, which of the following must be an even integer ?

A salesman's income consists of his salary and commission . His monthly salary is TK. 8,000. During one month,...

In a club 50% of the male voters and 80% of the female voters voted for candidate A . If candidate A received...