Question

ans the question.

chapter : compound interest.
class:8

please answer,it's urgent

Answer 1

Given, Principal = 1000, Amount = 1331, Rate = 10% per annum.

We know that A = P(1 + r/100)^n

⇒ 1331 = 1000(1 + 10/100)^n

⇒ (1331/1000) = (1 + 10/100)^n

⇒ (1331/1000) = (1 + 1/10)^n

⇒ (1331/1000) = (11/10)^n

⇒ (11/10)^3 = (11/10)^n

⇒ n = 3.

Therefore, time = 3 years.

Hope it helps!

Answer 2

P=Rs1000
A=Rs1331
R=10%
n=?

Using. A=P(1+R/100)^n ,we get

n=3 years.....

HOPE ITS HELPS YOU!!