Question 41
A sum of money becomes 4 times its original value in 6 years under compound interest. In how many years will it become 16 times of the original amount?
Step-by-Step Solution
The amount becomes 4 times the principal in 6 years.
The target is 16 times the principal. Since 16 = 4², the amount must undergo two such 4-fold growth periods.
$Required time = 2 \times 6 = 12 years$