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A certain sum at compound interest amounts to RS. 12960 in 2 yr and RS. 13176 in 3 yr. Find the rate per cent per annum.

A) \( \Large 1\frac{1}{3}% \)
B) \( \Large 2\frac{1}{3}% \)
C) \( \Large 1\frac{2}{3}% \)
D) \( \Large 2\frac{2}{3}% \)

Correct Answer:



C) \( \Large 1\frac{2}{3}% \)

Description for Correct answer:

SI for on RS.12960 for 1 yr

= 13176-12960=RS.216

By formula,SI=\( \Large \frac{P\times R\times T}{100} \)

=> 216=\( \Large \frac{12960\times R\times 1}{100} \)

R=\( \Large \frac{5}{3} \)=\( \Large 1\frac{2}{3}% \)

Part of solved Compound interest questions and answers : >> Aptitude >> Compound interest

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