Question

in what time will an amount double if the simple interest is calculated at 10% per annum​

Answer 1

Let the sum of money be ₹x.

Amount=₹2x.

Rate=10%p.a.

Time=?

SI=A-P=2x-x=₹x

SI=(P*T*R)/100

T=(SI*100)/(P*10)

T=x*100/x*10

T=10 yrs