Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 729 · 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 8% per year for 2 years, compounded every year (in ₹).
2. 2.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
3. 3.What amount will ₹51600 grow to in 1 year at 20% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
6. 6.A town has 25200 people. The population grows by 25% every year. What will the population be after 2 years?
7. 7.What amount will ₹14400 grow to in 2 years at 15% per year compound interest (in ₹)?
8. 8.What amount will ₹31100 grow to in 1 year at 4% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹34800 at 15% per year for 2 years (in ₹)?
10. 10.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.A town has 38800 people. The population grows by 5% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹7600 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹14400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
14. 14.Find the compound interest on ₹38400 at 12% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹37900 at 8% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹31000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹47200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹3700 at 20% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹7600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
21. 21.Find the compound interest on ₹51000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.A scooter is worth ₹27500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
23. 23.Find the compound interest on ₹14300 at 4% per year for 1 year, compounded every year (in ₹).
24. 24.A town has 9500 people. The population grows by 10% every year. What will the population be after 2 years?
25. 25.A scooter is worth ₹7500. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
26. 26.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.A town has 45000 people. The population grows by 8% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹46500 at 10% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹55000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
30. 30.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
32. 32.A scooter is worth ₹32000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
33. 33.Find the compound interest on ₹12000 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹56500 at 20% per year for 1 year, compounded every year (in ₹).
35. 35.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
36. 36.What amount will ₹24300 grow to in 1 year at 10% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
38. 38.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹29100 at 20% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?

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