Question

A sum of money doubles itself in 8 years ,find the rate of interest ​

Answer 1

Answer:

HEY MATE! THIS IS THE ANSWER HOPE THIS WILL HELP YOU✌✌

Step-by-step explanation:

Let the sum of money that's principal be x.

Time=8 years

Amount after 8 years becomes double=2x

Therefore,

Simple interest=Amount -principal=2x−x=x

Rate per annum =  

P×T

S.I×100

​

=  

x×8

x×100

​

=  

8

100

​

=  

2

25

​

=12.5%

Then,

We get interest of 8years is 12.5%

Answer 2

Answer:

Step-by-step explanation:

1/8=12.5%