मराठी

In how many years will Rs. 7,000 amount to Rs. 9,317 at 10% per annum compound interest? - Mathematics

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प्रश्न

In how many years will Rs. 7,000 amount to Rs. 9,317 at 10% per annum compound interest?

बेरीज
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उत्तर

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

A = 9317

P = 7000

r = 10%

n = ?

9317 = 7000 `(1+10/100)^n`

9317 = 7000(1.1)n

`9317/7000 = (1.1)^n`

1.331 = (1.1)n

(1.1)2 = 1.21

(1.1)3 = 1.331

(1.1)n = 1.331

n = 3

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Concept of Compound Interest - Inverse Formula
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पाठ 3: Compound Interest (Using Formula) - Exercise 3 (A) [पृष्ठ ४४]

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सेलिना Concise Mathematics [English] Class 9 ICSE
पाठ 3 Compound Interest (Using Formula)
Exercise 3 (A) | Q 13 | पृष्ठ ४४
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