A class of 20 girls and 30 boys arranged a picnic. However, only 30% of the girls and 40% of the boys attended the picnic. What percent of the class attended the picnic?

If x and (x+11)/2 are integers, which of the following must be true? i. x is odd ii. x is a multiple of 9 iii....

Munir bought a TV on credit for Tk x. He has to pay the money in three months. In the first month he paid 1/6t...

At a certain store, a chair was on sale for Tk. 5000. As the manager thought he could get more money for the c...

Which of the following fractions is the equivalent of 0.5%?

If n and p are both even number, which of the following number must be an odd number?

The total of the ages of Ali , Gazi and Masud is 93 years. Ten years ago, the ratio of their ages was 2 : 3 :...