A collection of books went on sale and 2/3 of them was sold for Tk 2.30 each. If none of the 36 remaining books were sold, what was the total amount received for the books that were sold?

TK 7,500 is divided in the ratio of 1 : 2 : 3 : 4 : 5. Find the difference between the greatest and smallest s...

When the diameter of a circle is tripled, the area of the circle will be increased by how many times?

A woman says, "if you revise my own age, the figure represents my husband's age. He is, of course, senior to m...

In the coordinate plane, line m passes through the origin and has a slope of 3. If points (6, y) and (x, 12) a...

A delivery cart went from Candle ford to Lark Rise and back at an average speed of 2/3 miles per hour. If the...

The average of several exam scores is 80. One make-up exam was given. Included with the other scores, the new...