Question

A sum of money becomes double in 20 yrs at S.l. in how many years will it be triple​

Answer 1

Answer:

Apply this relation twice :

(n - 1) x 100 = rt

First : (2 - 1) x 100 = 20r

=> r = 5%

Second : (4 - 1) x 100 = 5t

=> t = 300/5 = 60 years