Question

In how many years will a sum of money double itself at 10% per annum simple interest ?​

Answer 1

Answer:

20 years

Step-by-step explanation:

Let the principal be P and the time in which the principal gets doubled be t

Given rate is 10%

Now interest =P*R*T/100

=P *10*T/100

=P*T/10

Let the amount be 2P

Therefore, 2P=P*T/10 +P

P=P*T/10

1=T/10

T=10 years

Answer 2

Step-by-step explanation:

let p=x then , A=2x

SI=2x-x=x

now

SI=prt/100

x=x×10×t/100

100x=10xt

T=100x/10x

T=10

so the in 10years Will a sum of money double itself.

hope it helps you