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Compound Interest
Mathematics
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Compound Interest

Everything you need to master Compound Interest — the core concept, the method that actually works, and solved practice questions, all in one focused place. · by Digital Benchers

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Compound Interest is an important topic in Mathematics for competitive exam aspirants. This guide gives you a clear, exam-focused explanation of Compound Interest, shows how it is typically asked, and pairs it with solved practice questions so you can learn the approach and test yourself right away. Work through the questions below to build speed and accuracy.

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Questions
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Q1Find the amount of ₹8000 at 10% p.a. compound interest for 2 years (compounded annually).ModerateSolve →Q2At 8% p.a. compounded annually, the amount after 2 years is ₹14,520. Find the principal.ModerateSolve →Q3Find the amount of ₹12,000 at 12% p.a. compounded half‑yearly for 1.5 years.DifficultSolve →Q4The compound interest on ₹16,000 at 8% p.a. compounded quarterly for 2 years is:ModerateSolve →Q5Find the amount of ₹10,000 at 10% p.a. for 1 year 6 months when interest is compounded annually.DifficultSolve →Q6For ₹5000 at 12% p.a. for 2 years, find (CI − SI).ModerateSolve →Q7₹9000 amounts to ₹11,340 in 2 years under CI (annual). Find the rate p.a.ModerateSolve →Q8A sum of ₹15,000 is invested at 10% in the first year and 12% in the second year (CI annually). Find the amount after 2 years.ModerateSolve →Q9The town has a population 1,20,000. It increases at 2.5% per annum. Find the population after 3 years.PYQSolve →Q10A machine costs ₹5,00,000 and depreciates at 10% p.a. compounded annually. Find its value after 2 years.ModerateSolve →

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