Question

A sum of money doubles itself in 12 years. in how many years would it treble itself

Answer 1

A sum of money doubles in 20 years at simple interest, in how many years will it triple? A certain sum of money doubles itself at a certain simple interest in 12 years. It will become more than five times itself in how many more

Answer 2

Answer:  The answer is 18 years.

Step-by-step explanation:  We are to find the number of years it will take for a sum of money to become 3 times, if it becomes double in 12 years.

Let, the initial sum of money be "Rs. x."

We have

Time taken to make the sum of money 2x = 12 years.

Since, the sum become 1x in 0 years. So, it will become 1.5x in

6 years.

Therefore, the time taken to make the sum of money 3x is given by

$t_3=12\times 1.5=18~\textup{years}.$

Thus, the required time is 18 years.