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?

Mr. Thomas invested an amount of Rs. 13,900 devided in two different schemes A and B at the simple interest rate of 14% p.a. and 11% p.a. respectively. If the total amount of simple interest earned in 2 years be Rs. 3508. What was the amount invested in Scheme B?

A sum of Rs. 2600 is lent out I two parts in such a way that the interest on one part at 10% for 5 years is equal to that on another at 9% for 6 years. The sum lent out at 10% is

Two shopkeepers announce the same price of Rs. 700 for a sewing machine. The first offers successive discounts of 30% and 6% while the second offers successive discounts of 20% and 16%. The shopkeeper that offers better discount, charges…………less than the other shopkeeper.

What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?

3 litre of water is added to 11 litre of a solution containing 42% of alcohol in the water. The percentage of alcohol in the new mixture is

Successive discounts of 20% and 15% are equivalent to a single discount of

If 75% of a number is added to 75, the result is the number itself, then the number is

If selling price of an article is Rs. 250, profit percentage is 25%. Find the ratio of the cost price and the selling price