If P1 amount at R1 rate and P2 amount at R2 rate then rate at common sum of money

If P1amount at R1rate and P2 amount at R2 rate then rate at common sum of money

If the amount is 2 1/4 times of the sum after 2 years, then the rate of compound interest must be

The simple interest on a certain sum of money invested at a certain rate for 2 yr amounts to Rs.1200. The compound interest on the same sum of money invested at the same rate of interest for 2 yr amounts to Rs.1290. What was the principal?

The simple interest on a certain sum of money invested at a certain rate for 2 years amounts to Rs. 1200. The compound interest on the same sum of money invested at the same rate of interest for 2 years amounts to Rs. 1290. What was the principal ? A. Rs. 12000 B. Rs. 16000 C. Rs. 6000 D. Rs. 4000

A sum of ₹ 600 amounts to ₹720 in 4 years. What will it amount to if the rate of interest is incereased by 2%?

If P is the principal, R is the rate of interest per annum and n is the time period, find the amount at the end of the nth year if the interest is compounded yearly.

If there are three sum of money P,Q and R so that P is the simple interest of Q and Q is the simple interest of R, rate % and time are same in each case, then the relation of P, Q and R is given by