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24 vote

The amount (in Rs) received at 10% per annum compound interest after 3 yrs is Rs. 119790. What was the principal?

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The amount (in Rs) received at 10% per annum compound interest after 3 yrs is Rs. 119790. What was the principal?
1). 90000
2). 100000
3). 80000
4). 75000


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21 vote
Answered by on | Votes 21 |

Let principal be p

From the problem statement

⇒ 119790 = p(1 + 0.1)3

⇒ p = 119790/1.331

⇒ p = 90000

∴ Principal is Rs 90000.

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