In what time will a sum double itself at 7% per annum simple interest ?

Answer & Explanation

Option: [A]

Let the initial amount be Rs. 100

It will be double. That means Rs. 200

The simple will be Rs. (200-100)= Rs. 100

We can calculate the time from the formula given below :

T=(SIx100)/(PxR)

T=(100x100)/(100x7)

T=14.28 Yr