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Question : If INR 72 amounts to INR 104.4 in 3 years, what will INR 120 amount to in 5 years at the same rate percent per annum?

Option 1: INR 450

Option 2: INR 330

Option 3: INR 210

Option 4: INR 215


Team Careers360 2nd Jan, 2024
Answer (1)
Team Careers360 10th Jan, 2024

Correct Answer: INR 210


Solution : Given: INR 72 amounts to INR 104.4 in 3 years.
Principal amount P 1 = INR 72, total amount A 1 = INR 104.4 and time T 1 = 3 years
Simple Interest = 104.4 – 72 = INR 32.4
Let the rate of interest be $R$.
Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$
⇒ 32.4 = $\frac{72×R×3}{100}$
⇒ $R=\frac{32.4×100}{72×3}$
⇒ $R=15$%
P 2 = 120, T 2 = 5 years
Simple interest = $\frac{120×15×5}{100}=90$
⇒ Amount = 120 + 90 = INR 210
Hence, the correct answer is INR 210.

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