Question

at what rate percent per annum simple interest will what rate percent per annum simple interest will a sum of money triples itself in 25 years ​

Answer 1

Answer:

Let principle be P

Given,

n = 25 years, A = 3P

A = P + Pnr/ 100

3P = P + [P(25)r]/ 100

3P = P[ 1+ 25r/100]

3 = (100 + 25r) / 100

300 = 100 + 25r

25r = 200 =

r = 8

Thus rate percent = 8%