The sum of principal and simple interest of a certain amount of money would be Tk. 460 after three years from now and Tk. 500 after five years from now. What is the related interest rate?

Humayra borrowed Tk. 240, free of interest, to pay for her new hair band. If she pays back 20% of the amount e...

The owner of Aarong starts to calculate the percentage of customers who purchase Tagas. if 40% of the total cu...

The price of desktop computer is discounted by 20%, and reduced price is then discounted by 20%. The series of...

Of the 120 households in an area, 55 have cars, 35 have motor bikes, and 20 have both cars and motor bikes. Ho...

the average age of 12 children is 20 years. If the age of one more child is added, the average decreased by 1....

The length of a rectangle is 3 times of its width. If the width of the rectangle is 5 inches, what is the rect...