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

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...

At a certain bookstore , the regular price of each book is 20 percent less than its list price. If during a sa...

XYZ company sold 800 units of watches for TK.800 each and 1,000 units of watches for TK. 500 each. If the comp...