Question

In how many years will any capital be tripled at the simple interest rate of 25/4% per annum?​

Answer 1

Answer:

Let the number of years be n and P be the principal

Interest grown during n years =I =P×(25/400)×n

It is given P+I=3P

P+{P×(25/400)×n=3P

P×(1/16)n=2P

(1/16)n=2

n=16×2=32 years