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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Sheela has paid simple interest on a certain sum for 4 years at 9.5% per annum is ₹ 21,280. Find the sum - Mathematics

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Question

Sheela has paid simple interest on a certain sum for 4 years at 9.5% per annum is ₹ 21,280. Find the sum

Sum

Solution

Let the Principal be ₹ P

Rate of interest r = 9.5% per annum

Time (n) = 4 years

Simple Interest I = `"Pnr"/100`

Given I = ₹ 21,280

∴ `"Pnr"/100` = ₹ 21,280

`("P" xx 4 xx 9.5)/100` = ₹ 21,280

`("P" xx 4 xx 95)/1000` = ₹ 21,280

P = `(21280 xx 1000)/(4 xx 95)` = ₹ 56,000

∴ Sum of money Sheela bought = ₹ 56,000

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Chapter 2: Percentage and Simple Interest - Exercise 2.4 [Page 44]

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Samacheer Kalvi Mathematics - Term 3 [English] Class 7 TN Board
Chapter 2 Percentage and Simple Interest
Exercise 2.4 | Q 3 | Page 44
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