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A Certain Sum Amounts to Rs. 5,292 in Two Years and Rs. 5,556.60 in Three Years, Interest Being Compounded Annually. Find : the Rate of Interest. - Mathematics

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प्रश्न

A certain sum amounts to Rs. 5,292 in two years and Rs. 5,556.60 in three years, interest being compounded annually. Find : the rate of interest.

योग
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उत्तर

Amount in two years= Rs. 5,292
Amount in three years= Rs. 5,556.60
Difference between the amounts of two successive years
= Rs. 5,556.60 - Rs. 5,292 = Rs. 264.60

⇒ Rs. 264.60 is the interest of one year on Rs. 5,292

∴ Rate of interest = Rs. `[ 100 xx "I"]/[ "P" xx "T"] %`
= `[ 100 xx 264.60 ]/[ 5,292 xx 1 ] %` 
= 5%

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अध्याय 2: Compound Interest (Without using formula) - Exercise 2 (C) [पृष्ठ ३८]

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सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 2 Compound Interest (Without using formula)
Exercise 2 (C) | Q 3.1 | पृष्ठ ३८

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