An amount of ₹ 8000 was deposited at simple interest for 3 years at 7.5 % per annum. How much more

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6.Interest

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An amount of ₹ $8000$ was deposited at simple interest for $3$ years at $7.5$ $\%$ per annum. How much more would have gained (In ₹) had it been deposited at the same rate per cent compound interest?

A

$135.75$

B

$138.75$

C

$138.375$

D

$138.753$

Solution

Difference $=\frac{\text { Sum } \times r^{2}(300+r)}{(100)^{3}}=\frac{8000 \times(7.5)^{2}(300+7.5)}{(100)^{3}}=₹ 138.375$

Standard 13

Quantitative Aptitude

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