Question

find the compound interest on 7500 at 4% per annum for 2 years compounded annually

Answer 1

Hope it helps...!!!

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Amount,

=> Rs [7500*(1+(4/100)2]

=> Rs (7500 * (26/25) * (26/25) )

=>Rs. 8112.

Therefore,

C.I.,

=>Rs. (8112 - 7500)

=> Rs. 612

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Answer 2

$\textbf{P = Principal = 7500} \\ \textbf{ R = Rate = 4\%} \\ \textbf{ T = time = 2 years} \\ \textbf{A = Amount }$





Hence,


$CI_{1} = \frac{ P × R × T }{ 100 } \\ \\ \\ \: \: \: \: \: \: \: \: = \frac{7500 \times 4 \times 1}{100} \\ \\ \\ \: \: \: \: \: \: \: = 75 \times 4 \\ \\ \\ \: \: \: \: \: \: \: = 300$



Hence,

$A_{1} = P_{2} = 7500 + 300 \\ \\ \: \: \: \: \: \: = 7800$



Hence,


$CI_{2} = \frac{ P_{2} ×R × T}{100} \\ \\ \: \: \: \: \: \: \: \: = \frac{7800 \times 4 \times 1}{100} \\ \\ \: \: \: \: \: \: \: \: = 78 \times 4 \\ \\ \: \: \: \: \: \: \: \: = 312$




$A_{2} = 7800 + 312 \\ \\ \: \: \: \: \: \: = 8112$




CI = 8112 - 7500

CI = 612