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What sum of money will amount to Rs. 5,445 in 2 years at 10% per annum compound interest?

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Question

What sum of money will amount to Rs. 5,445 in 2 years at 10% per annum compound interest?

Sum
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Solution

Given:

P = Rs. 5,445 ; n = 2 years and r = 10%

Amount = `P (1 + r/100 )^n`

⇒ 5,445 = `P (1 + 10/100 )^2`

⇒ 5445 = P(1.1)2 

⇒  `P = 5445/1.21`

⇒  P = Rs.4500

Hence the sum of money is Rs.4500

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Concept of Compound Interest - Inverse Formula
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Chapter 3: Compound Interest (Stage 2) [Applications] - Exercise 3 (A) [Page 44]

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Selina Concise Mathematics [English] Class 9 ICSE
Chapter 3 Compound Interest (Stage 2) [Applications]
Exercise 3 (A) | Q 4 | Page 44

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