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Simple interest is the same amount every year: R per cent of the money you started with. Multiply principal, rate and time, divide by 100. Turn the formula round to find the rate or the time.
✓ You passed this topic’s test.
P × R × T ÷ 100 — “interest grows by the same amount every year”
Use it for: Bank deposits, loans and every interest question in Class 7–10.
Check: One year’s interest is 8% of ₹5000 = ₹400, and 3 × ₹400 = ₹1200 ✓
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🏦 Interest Expert badge when you pass — and a certificate when you finish all 6 topics of Part 3 · Class 8–10. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
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