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The difference of interest for 2 years and 3 years on a sum of ₹ 2100 at 8% per annum is ______. - Mathematics

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Question

The difference of interest for 2 years and 3 years on a sum of ₹ 2100 at 8% per annum is ______.

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Solution

The difference of interest for 2 years and 3 years on a sum of ₹ 2100 at 8% per annum is ₹ 168.

Explanation:

From the question it is given that,

P = ₹ 2100

Time = 2 years

Rate = 8%

Then, we know the formula of Simple interest

`I = (P xx R xx T)/100`

`I = (2100 xx 2 xx 8)/100`

`I = 33600/100`

I = ₹ 336

Then, Time = 3 years

`I = (P xx R xx T)/100`

`I = (2100 xx 3 xx 8)/100`

`I = 50400/100`

I = ₹ 504

The difference of interest for 2 years and 3 years = 3 years – 2 years

= ₹ 504 – ₹ 336

= ₹ 168

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Chapter 7: Comparing Quantities - Exercise [Page 202]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 7 Comparing Quantities
Exercise | Q 53. | Page 202

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