Question

a sum of money invested at compound interest triples itself in 5 years in how many years will become 27 times at the same rate of compound interest

Answer 1

Please see the attachment

Answer 2

Answer s 13 Years

Step-by-step explanation:

Let P be the principle

So,

P + Interest in 2 yrs (2P) = 3P (because the amount becomes thrice)

P + 2P = 3P

Now, to make the sum 27 times we have to do

P + 26P ($2P \times 13\ yr$) = 27P

Ans- So, the sum will become 27 times in 13 years.