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

A principal becomes ₹ 17,000 at the rate of 12% in 3 years. Find the principal.

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Question

A principal becomes ₹ 17,000 at the rate of 12% in 3 years. Find the principal.

Sum
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Solution

Given the Principal becomes ₹ 17,000

Let the principle initially be P

Rate of Interest r = 12% per annum

Time n = 3 years

According to the problem given I = 17000 – P

= `("P" xx 3 xx 12)/100`

17000 = `36/100 "P" + "P"`

17000 = `"P"(36/100 + 1)`

17000 = `"P"(136/100)`

P = `(17000 xx 100)/136`

P = 12,500

∴ Principal P = ₹ 12,500

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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 8 | Page 44

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