Students of a class stand in a queue. If Ratan is 19in order from both ends, how many students are there in the queue?

If 1 is added to the numerator of a fraction, the fraction becomes 1. If 1 is added to the denominator, the fr...

The cost of 9 mangoes and 5 apples is equal to the cost of 7 mangoes and 8 apples. Find the ratio between the...

A shopkeeper has sufficient money to buy 50 books. On reduction in the price of each book by Tk. 4, he could b...

A man deposits certain amount in his bank account. After a few days. he withdraws half of the money deposited...

A worker earns Tk. 250 on the first day and spends tk. 200 on the second day, earns Tk. 250 on the third day a...

.In a group of 135 persons, 50% people contributed tk. 40 each, 30% contributed Tk. 60 each and the remaining...