If the price of petrol increases by 25% and Benson intends to spend only an additional 15% on petrol, by how much % will he reduce the quantity of petrol purchased?

During one year the population o f a town increased by 20% and during the next year it diminished by 20%. Then the population now is

From the salary of an officer, 10% is deducted as house rent, 20% of the rest, he spends on conveyance, 20% of the rest he pays as income tax and 10% of the balance, he spends on clothes. Then, he is left with Rs. 15,552. Find his total salary?

The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per  annum is:

How many kgs of Basmati rice costing Rs.42/kg should a shopkeeper mix with 25 kgs of ordinary rice costing Rs.24 per kg so that he makes a profit of 25% on selling the mixture at Rs.40/kg?

The banker’s discount of a certain sum of money is Rs. 72 and the true discount on the same sum for the same time is Rs. 60. The sum due is

Company A pays 5.5% on shares of Rs.100, and another pays at the rate of 3.5%  On shares of Rs.10 each. If the price of the former be Rs.150.00 and of the later Rs.15.00, compare the rates of interest which the shares return to a purchaser.

A salesman makes a commission of x percent on the first Rs. 2,000 worth of sales in any given month and y percent on all further sales during that month. If he makes Rs. 700 from Rs. 4,000 of sales of March and he makes Rs. 900 from Rs. 5,000 of sales in April, what is the value of x?

The banker's gain of a certain sum due 2 years hence at 10% per annum is Rs. 24. What is the present worth?