Question

The simple interest on a sum of money is 25% of the a principal & the number of years is equal to the rate percent per annum. find the rate.​

Answer 1

Answer:

Rate of interest = Time

Simple interest = 25/100 of Principal

Formula Used:

Simple interest = Principal × Rate × Time

Calculation:

Let the principal be P

Let the rate of interest = R

Simple interest = P × R × R/100

⇒ 25/100 × P = P × R × R/100

⇒ R = 5 %

∴ The rate per cent is 5%