✏️ Practice Exercises

SI & CI

5 problems · Easy to Hard · Type your working · AI checks your steps

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How to use these exercises

Read the question → work it out step-by-step in the box → click Check My Working to get AI feedback. Use hints if stuck. Reveal the full solution only after you have tried.

01

easy

Find the simple interest on ₹6000 at 8% per annum for 3 years.

💡 Show hint

SI = (P × R × T) / 100.

Your Working

02

easy

Find the compound interest on ₹5000 at 10% per annum for 2 years, compounded annually.

💡 Show hint

Amount = P × (1 + R/100)^T. CI = Amount − P.

Your Working

03

medium

A sum of money doubles itself in 8 years at simple interest. What is the rate per annum?

💡 Show hint

When SI = P, R × T = 100.

Your Working

04

medium

The difference between CI and SI on ₹8000 at 5% per annum for 2 years is:

💡 Show hint

CI − SI for 2 years = P × (R/100)².

Your Working

05

hard

At what rate per annum will ₹10000 amount to ₹13310 in 3 years compounded annually?

💡 Show hint

Amount = P (1 + R/100)^T → solve for R.

Your Working

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