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Question

# How long will it take for an amount of ₹ 450 to yield ₹ 81 as interest at 4.5% per annum of simple interest?

A

5 years

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B

4 years

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C

6 years

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D

3 years

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Solution

## The correct option is B 4 years Given, ₹ 81 is the simple interest being generated on ₹ 450. Let the time taken be t years. We know, S.I=P×r×t100 where, S.I = simple interest P = principal r = rate of interest and t = time 81=450×4.5×t100 ⇒t=100×81450×4.5 years=4 years So, it will take 4 years for an amount of ₹ 450 to yield ₹ 81 as interest at 4.5% per annum of simple interest.

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