Rs 15000 amounts to Rs 25920 in 3 years at r per annum of compound interest What is the value of r ........

Quantitative Aptitude ( CCS) Compound Interest

Rs 15000 amounts to Rs 25920 in 3 years at r% per annum of compound interest. What is the value of r?

A=P(1+r/100)ⁿ
25920=15000(1+r/100) ³
25920/15000 = (1+r/100) ³
648/375 = (100+r) ³/100³
Put r value from options
R=20%.

Hence, option 3 is the correct answer.

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