The average of 7 numbers of 40. If 3 more numbers, with an average of 21, are added to these numbers, what will be the average of the combined 10 number?

If Ms. Rehana (from the previous question) leaves Town A at 8:00 am, how long would she have to wait for the t...

Per column inch (1 column * 1 inch) area newspaper advertisement costs Tk. 1,200. How much would a "5 columns...

A 5% monthly salary increase resulted in a salary increase of Tk. 6,000 per year for an employee. what was her...

A cooperative collected Tk. 5,000 from its members. if each member contributed at least Tk. 240. What is the g...

If the cooperative (from the previous question) has the greatest number of members possible (with a minimum of...

In 2000, the book value of a car was 2/3rd of the original purchase price, and in 2004, its book value was 1/2...