Question

A certain sum of money doubles itself in 8 years. How much time will it take to triple itself at the same rate?

[Irrelevant answers will be reported]​

Answer 1

It will take 12years to triple itself

Explanation:

let the sum of money=x

In 8years x becomes 2x

thus

2x-8years

Then 3x-?

Using ratio and proportion,

x=3/2×8years=12years