CAT 2020 Question Paper (Slot 3) Question 63

Question 63

A person invested a certain amount of money at 10% annual interest, compounded half-yearly. After one and a half years, the interest and principal together became Rs.18522. The amount, in rupees, that the person had invested is

Correct Answer: 16000



Rate of interest = 10%

Since it is compounded half-yearly, R=5%


We know, A = $$P\left(1+\frac{R}{100}\right)^{^n}$$

18522 = $$P\left(1+0.05\right)^3$$

=> P = 16000

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