Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 535 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.Find the compound interest on ₹25000 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.What amount will ₹5700 grow to in 1 year at 20% per year compound interest (in ₹)?
3. 3.What amount will ₹43200 grow to in 2 years at 15% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹42500 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹17500 grow to in 2 years at 12% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹57200 at 5% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹42000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
9. 9.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
10. 10.What amount will ₹10500 grow to in 1 year at 20% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹9800 at 10% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹31400 at 20% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹3700 at 10% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 17600 people. The population grows by 5% every year. What will the population be after 1 year?
17. 17.Find the compound interest on ₹15400 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹15000 grow to in 2 years at 12% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹37200 at 5% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹29600 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹12300 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹15300 grow to in 1 year at 8% per year compound interest (in ₹)?
24. 24.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
25. 25.Find the compound interest on ₹37500 at 12% per year for 2 years, compounded every year (in ₹).
26. 26.A town has 43700 people. The population grows by 20% every year. What will the population be after 1 year?
27. 27.Find the compound interest on ₹43200 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹2800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
29. 29.A town has 22500 people. The population grows by 20% every year. What will the population be after 1 year?
30. 30.A town has 48000 people. The population grows by 15% every year. What will the population be after 1 year?
31. 31.A scooter is worth ₹20400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
32. 32.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹3600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹47600 at 5% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹3300 at 20% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹2100 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹28000 at 15% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹47900 at 20% per year for 2 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹19000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
40. 40.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?

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