Question

Rohan lent a sum of money to his friend at 20% simple
interest p.a. In what time will this sum of money amount
to 5 times of itself?​

Answer 1

Answer:

25. years

explinantion:

20% for one year so take as 100% for 5 years so

5 times is equal to 5years×5 times = 25

Answer 2

Let the principal be x.

Amount = 5x

Simple Interest = 5x- x = 4x

4x = x × 20 × T/100

4x×100/x × 20 = T

T = 20 years