The value of a machine depreciates at the rate of 10% per annum. It was purchased 3 years ago. If its present value is Rs.53071.20, the purchase price of the machine was:

A furniture salesman increased the value of furniture by 20 percent due to the lure of more income, which led to a decrease of 30 percent in his sales, then tell him what percentage was reduced in his income?

If the length of a rectangle is increased by 10% and the area is unchanged, then how much percent does the breadth decrease?

Atul divides some money among his three children A, B and C. The ratio of amount received by A and C together to the amount received by B is 5:2. C received 150% of the amount received by A. If the amount received by C is Rs. 1500. Find the sum of amount received by A and B together. 

A student was asked to find 3.5% of an amount, he mistakenly found 5.5% which was Rs.220, what would be the correct answer?

If the purchase price of an article is equal to 80 percent of its selling price then there will be profit.

Manju's salary is 60% more than Sohan's then tell what % Sohan's salary is less than Manju's salary?

If the income of A is 25% more than that of B, then by what percent is the income of B less than that of A?