Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 811 · 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 is the difference between the compound interest and the simple interest on ₹8700 at 20% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹38200 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
5. 5.A town has 6800 people. The population grows by 5% every year. What will the population be after 2 years?
6. 6.What amount will ₹18700 grow to in 1 year at 20% per year compound interest (in ₹)?
7. 7.A town has 15000 people. The population grows by 12% every year. What will the population be after 2 years?
8. 8.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.What amount will ₹10000 grow to in 2 years at 25% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹12400 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹7000 grow to in 3 years at 20% per year compound interest (in ₹)?
12. 12.What amount will ₹20800 grow to in 2 years at 5% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹47800 at 20% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹22000 at 10% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹53300 at 20% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹44400 at 15% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹50300 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.A town has 51500 people. The population grows by 25% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹46400 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹31200 at 15% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹9200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
23. 23.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
24. 24.What amount will ₹37200 grow to in 1 year at 4% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹11000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹58000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
28. 28.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
29. 29.What amount will ₹42500 grow to in 2 years at 20% per year compound interest (in ₹)?
30. 30.What amount will ₹54400 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹23300 grow to in 1 year at 15% per year compound interest (in ₹)?
32. 32.A town has 2700 people. The population grows by 10% every year. What will the population be after 2 years?
33. 33.Find the compound interest on ₹23200 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹47500 grow to in 2 years at 8% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹45000 at 20% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹46400 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹34800 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹35300 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹6800 at 15% per year for 1 year, compounded every year (in ₹).

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