Question

at what percentage rate of simple interest per annum will an amount of money double in 10 years​

Answer 1

Answer:

10% will be the rate of interest.

Step-by-step explanation:

let the principle be x.

time = 10 years

Amount after 10 years gets doubled,

so amount = 2x

Simple interest = amount - principal

Simple interest = 2x-x = x

Rate per annum = SI × 100 / p × T

=x × 100 /x × 10

So rate per annum = 10%