A and B together have Tk. 1210. If 4/15 of A's amount is equal to 2/5 of B's amount, what is amount B has ?

In a class 75% passed in English, 60% in Mathematics and 25% failed in both the subjects. What is the percenta...

A person makes a profit of 10% on 25% of the quantity and loss of 20% on the rest of the quantity. What is the...

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

In a row of trees is 7th from the left and 14th from the right end. How many trees are there in the row?

The average age of 12 children is 15 years. If another child comes the average age comes to 13. What is the ag...

A train 150 meter long and running at a speed of 60 km per hour takes 30 seconds to cross a bridge. what is a...