Question

In how many years will rs 1800 amount to rs 2178 at 10 per cent anum compounded annually

Answer 1

2178 = 1800(1+10/100)^n (The formula is P(1+r/100)^n)
2178/1800 = (1+10/100)^n
121/100 = (11/10)^n
(11/10)^2 = (11/10)^n

n = 2.

Answer 2

Hope it will help u...