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Mathematics

Find the amount and the compound interest on ₹5000 for 2 years at 6% per annum, interest payable yearly.

Compound Interest

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Answer

Formula for calculating amount,

A = P(1+r100)nP\Big(1 + \dfrac{r}{100}\Big)^n

Using formula we get,

A=5000(1+6100)2=5000×(106100)2=5000×(5350)2=5000×5350×5350=140450002500=5618.A = ₹5000\Big(1 + \dfrac{6}{100}\Big)^2 \\[1em] = ₹5000 \times \Big(\dfrac{106}{100}\Big)^2 \\[1em] = ₹5000 \times \Big(\dfrac{53}{50}\Big)^2 \\[1em] = ₹5000 \times \dfrac{53}{50} \times \dfrac{53}{50} \\[1em] = ₹\dfrac{14045000}{2500} \\[1em] = ₹5618.

Compound interest = Final amount - Principal = ₹5618 - ₹5000 = ₹618.

Hence, the amount and the compound interest on ₹5000 for 2 years at 6% per annum is ₹5618 and ₹618 respectively.

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