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The compound interest(compounded -annually) on a certain sum of money at the rate of 20 p.c.p.a. for 2 years is Rs.5,632/-. What is the simple interest on the same sum of money at the rate of 12 p.c.p.a. for 3 years ?
A) Rs.4608/-
B) Rs.4464/-
C) Rs.4672/-
D) Rs.4752/-
E) Rs.4536/-
Correct answer:
A) Rs.4608/-
Description for Correct answer:
Let the Principal be = Rs.x
According to question,
\( 5632 = x \left[ 1+\frac{20}{100} \right]^{2} - x \)
\( 5632 = x\left[ \frac{36}{25}-1 \right] \)
\( x = \frac{5632 \times 25}{11} \)
\( x = Rs.12,800/- \)
\( \frac{12800 \times 12 \times 3}{100} = Rs.4,608/- \)
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