Question

find the compound interest and the amount on ₹1000 at the rate of 10% per annum for 3years ​

Answer 1

Answer:

compound interest after 2yrs of 1000 Rs at the rate 10% per annum is 210 Rs. it is given that principal , P = 1000 Rs. = 210 Rs. hence, compound interest = 210 Rs.Nov 18, 2018

Answer 2

☆Given:-

• Principal (p) = Rs.1000
• Rate (r) = 10% per annum
• Time (n) = 3 years

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☆To find:-

• Compound interest.

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☆Solution:-

Firstly,

• we have to find out the compound interest.

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★Formula used:-

${\dag}\:{\underline{\boxed{\sf{\purple{C.I = P[(\dfrac{1 + r}{100}^n - 1]}}}}}$

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$\tt\longmapsto{1000[( \dfrac{1 + 10}{100})^3 - 1]}$

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$\tt\longmapsto{1000[( \dfrac{1 + 1}{10})^3 - 1]}$

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$\tt\longmapsto{1000[(1 + 0.1)^3 - 1]}$

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$\tt\longmapsto{1000[(1.1)^3 - 1}$

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$\tt\longmapsto{1000[1.33 - 1}$

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$\tt\longmapsto{1000 \times 0.33}$

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$\sf\longmapsto{\boxed{\pink{330}}}$

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Hence,

• the compound interest is Rs.330.