If the amounts of a sum of money be Rs. 672 in 2 years and Rs. 714 in years, then find the rate of compound interest per annum.

A certain sum of money becomes Rs 2100 in 4 years and Rs 2550 in 7 years. Find the rate of simple interest per annum.

A sum of money amounts Rs. 800 in 3 years and Rs. 840 in 4 years at compound interest. What is the rate of compound interest per annum?

A sum of Rs. 2400 amount to Rs. 2646 in 2 years. Find the rate of compound interest per annum?

If the amount of Rs 100 for 2 years is Rs 121, then find the rate of compound interest in percent per annum.

A sum of money amounts to Rs. 2400 in 3 years and Rs. 2520 in 4 years on C.I. Find the rate of interest.

A certain sum of money amounts to Rs. 2420 in 2 years and Rs. 2662 in 3 years at some rate of compound interest, compounded annually. The rate of interest per annum is:

A sum of money on compound interest amount to Rs. 9680 in 2 years and to Rs. 10648 in 3 years. What is the rate of interest per annum?

A sum of Rs. 5120 amounts to Rs. 7290 in 3 years at compound interest. Find the rate of interest per annum.