The simple interest on a sum of money is 4 / 9 of the principal and the number of years is equal to the rate percent per annum. The rate per annum is 

A sum of money amounts to 5,200 in 5 years and to 5,680 in 7 years at simple interest. The rate of interest per annum is-

Rita bought a television set with 20% discount on the labeled price. She made a profit of Rs. 800 by selling it for Rs. 16,800. The labeled price of the set was 

A man buys a table and a chair for 500. He sells the table at a loss of 10 % and the chair at a gain of 10 %. He still gain ₹10 on the whole. The cost price of chair in rupees is 

The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26. The correct average is: 

Ram spends 20% of his monthly income on his household needs, 15% of the remaining income on books and 30% of the remaining income on clothes. Now he has Rs 9520 left, so what is his monthly income?

In how many years a sum of Rs. 3000 will yield an interest of Rs. 1080 at 12% per annum simple interest?

Direction : What should come in place of the question (?) in the following question.

916 ×?×3=214344