Question

find the compound interest on 10000rs for 3 years at 7% per annum

Answer 1

$A= P(1 + \frac{R}{100} ) {}^{n}$

$\: \: \: \: = 10000(1 + \frac{7}{100} ) {}^{3}$

$\: \: \: \: = 10000( \frac{107}{100} )( \frac{107}{100} )( \frac{107}{100} )$

$\: \: \: \: = (107)(107)( \frac{107}{100} )$

$\: \: \: \: = 11449 \times \frac{107}{100}$

$\: \: \: \: = 12250.43$

$CI= 12250.43 - 10000$

$\: \: \: \: = 2250.43$

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Answer 2

here. cant guarantee its correct tho! i did it without the formula!