CSAT (Aptitude)·MCQ Practice

Simple and Compound Interest — MCQ Practice

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Version 1Updated 6 Mar 2026

Interactive MCQ Practice

Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 5 questions available.

Q1medium

A sum of money doubles itself at simple interest in 10 years. In how many years will it triple itself at the same rate?

Q2medium

The difference between compound interest and simple interest on a certain sum at 10% per annum for 2 years is ₹631. Find the sum.

Q3medium

At what rate percent per annum will a sum of ₹1000 amount to ₹1331 in 3 years, compounded annually?

Q4hard

A sum of money is invested at 20% per annum compound interest, compounded half-yearly. If the amount after 1 year is ₹7200, what was the principal sum?

Q5medium

An amount of ₹8000 is invested at simple interest for 3 years at a certain rate. If the same amount is invested at compound interest for 2 years at the same rate, the interest earned is ₹1680. Find the simple interest earned in the first case.

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