Of the 32 students in a certain class , 15 are in debating club and 20 are in music club. If 10 of the students are not in either club, how many of the students are in only one of the two clubs ?

A car rental agency charges TK.2,000 a day plus TK.10 per mile for its rental cars. What is the total cost of...

A boy got 50% of the questions on a test correct. If he had 10 questions correct out of the first 12, and 25%...

What is the greater of two number whose product is 90, if sum of these two numbers exceeds their difference by...

At a book fair, Danesh buys three pencils that cost TK.3.25 each and a color pen that costs TK. 5. Which expre...

Rashed's average on 4 tests is 80. Assuming he can earn no more than 100 on any test, what is the least he can...

In creasing the original price of an item by 10%, then decreasing by 20% and then again increasing the price b...