Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 871 · 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.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹58400 at 10% per year for 1 year, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹19200 at 15% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 11200 people. The population grows by 5% every year. What will the population be after 2 years?
6. 6.What amount will ₹24200 grow to in 1 year at 12% per year compound interest (in ₹)?
7. 7.What amount will ₹44900 grow to in 1 year at 12% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹54800 at 5% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹33000 at 4% per year for 1 year, compounded every year (in ₹).
11. 11.What amount will ₹41100 grow to in 1 year at 10% per year compound interest (in ₹)?
12. 12.A town has 2300 people. The population grows by 8% every year. What will the population be after 1 year?
13. 13.What is the difference between the compound interest and the simple interest on ₹18300 at 10% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹59500 at 10% per year for 2 years (in ₹)?
15. 15.What amount will ₹43200 grow to in 1 year at 25% per year compound interest (in ₹)?
16. 16.A town has 41600 people. The population grows by 25% every year. What will the population be after 3 years?
17. 17.A scooter is worth ₹52300. Its value falls by 10% 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 ₹23200 at 10% per year for 2 years (in ₹)?
19. 19.What amount will ₹56000 grow to in 3 years at 20% per year compound interest (in ₹)?
20. 20.A town has 59600 people. The population grows by 5% every year. What will the population be after 2 years?
21. 21.What amount will ₹58500 grow to in 1 year at 12% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹11200 at 15% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹55000 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.A town has 24800 people. The population grows by 10% every year. What will the population be after 1 year?
25. 25.What amount will ₹51000 grow to in 3 years at 20% per year compound interest (in ₹)?
26. 26.What amount will ₹16700 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹10300 at 15% per year for 1 year, compounded every year (in ₹).
28. 28.A town has 28000 people. The population grows by 20% every year. What will the population be after 2 years?
29. 29.A town has 43000 people. The population grows by 10% every year. What will the population be after 3 years?
30. 30.A scooter is worth ₹36500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹8800 at 5% per year for 2 years (in ₹)?
32. 32.What amount will ₹22000 grow to in 2 years at 10% per year compound interest (in ₹)?
33. 33.What amount will ₹8700 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹2800 at 25% per year for 2 years (in ₹)?
35. 35.What amount will ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹47800 at 12% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹55000 grow to in 2 years at 4% per year compound interest (in ₹)?
38. 38.What amount will ₹19500 grow to in 1 year at 8% per year compound interest (in ₹)?
39. 39.What amount will ₹32100 grow to in 1 year at 12% per year compound interest (in ₹)?
40. 40.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?

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