Question

Simple interest on sum equal to 1/5 of itself in 5 years.Find the rate of interest​

Answer 1

Answer:

Let sum= Rs. 100

SI= 1/5 × 100= Rs. 20

Time= 5 yrs

Now, SI= PRT/100

or, R= SI×100/PT

or, R= 100×20/100×5

or, R=4%