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Question : A certain amount of money earns Rs. 540 as a simple interest in 3 years. If it earns a compound interest of Rs. 376.20 at the same rate of interest in 2 years, find the amount (in Rs.):

Option 1: Rs. 1600

Option 2: Rs. 1800

Option 3: Rs. 2000

Option 4: Rs. 2100


Team Careers360 16th Jan, 2024
Answer (1)
Team Careers360 20th Jan, 2024

Correct Answer: Rs. 2000


Solution : Given: Simple interest (SI) = Rs. 540
Period of simple interest = 3 years
Compound interest (CI) = Rs. 376.20
Period of compound interest = 2 years
Simple interest for 1 year = $\frac{1}{3}×540$ = Rs. 180
Simple interest for 2 year = $\frac{2}{3}×540$ = Rs. 360
CI – SI = 376.20 – 360 = Rs. 16.20
Rate of interest = $\frac{16.20}{180}×100$ = 9% per annum
Principal = $\frac{\text{S.I}×100}{\text{Time×Rate}}$
Therefore, Principal = $\frac{180×100}{1×9}$ = Rs. 2000
Hence, the correct answer is Rs. 2000.

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