Question

a sum of money becomes double of itself in 5 years at a certain rate of interest . find the rate of interest per aunnum​

Answer 1

Answer:

20%

Step-by-step explanation:

Let P be 100

therefore, I=100

I=PRT/100

100=100*R*5/100

100/5=R

R=5

Answer 2

Answer:

20percent

Step-by-step explanation:

According to formulae

p×r×t/100

=p×5×t/100=20percent.