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A certain sum of money amounts to Rs. 20,160 in 5 years at 8% interest. Find the principal

Rs. 14,000
Rs. 14,100
Rs. 14,440
Rs. 14,400
Explanation:

P+SI=A

SI=$\dfrac{p \times n\times r}{100}$

P+$\dfrac{P\times 5\times 8}{100}=20,160$

$P+\dfrac{2P}{5}=\dfrac{7P}{5}=20,160$

$P=\dfrac{20160\times5}{7}=14,400$

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