On a certain sum, the simple interest at the end of `12 1/2` years becomes `3/4` of the sum. What is the rate of interest p.c.p.a?

2400 becomes 2976 in 3 years at a certain rate of simple interest. What sum of money will become 5016 in 4 years at the same rate of interest?

If a certain sum of money at simple interest amounts to Rs. 5184 in 2 years and to Rs. 5832 in 3 years, what is the sum and the rate of interest?

A sum becomes three times of itself in 10 years at the rate of simple interest. What is the rate of interest per annum?

What would be the difference between the simple interest and the compound interest on a sum of the money at the end of four years? I. The rate of interest is 5 p.c.p.a. II. The sum fetches a total of Rs. 2000 as simple interest at the end of 8 years. III. The difference between the simple interest and the compound interest at the end of 2 years is Rs. 12.50. (a) II only (b) III only (c) II or III only (d) All I, II and III are required. (e) None of these

Simple interest on a certain sum for 6 years is (9)/(25) of the sum . The rate of interest is

A person lent out certain sum on simple interest and the same sum on compound interest at a certain rate of interest per annum. He noticed that the ratio between the difference of compound interest and simple interest of 3 years and 2 years is 16:49. The rate of interest per annum is