Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 94 · 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.A scooter is worth ₹15500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
2. 2.What amount will ₹14700 grow to in 1 year at 25% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹20900 at 10% per year for 2 years (in ₹)?
4. 4.A town has 13000 people. The population grows by 20% every year. What will the population be after 3 years?
5. 5.Find the compound interest on ₹8000 at 4% per year for 1 year, compounded every year (in ₹).
6. 6.A town has 38000 people. The population grows by 5% every year. What will the population be after 1 year?
7. 7.Find the compound interest on ₹51200 at 8% per year for 1 year, compounded every year (in ₹).
8. 8.A town has 7500 people. The population grows by 4% every year. What will the population be after 2 years?
9. 9.Find the compound interest on ₹54800 at 15% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹18800 at 15% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹56700 at 10% per year for 2 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹53600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹2300 at 10% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
16. 16.What amount will ₹45400 grow to in 1 year at 12% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹7100 at 15% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹47000 grow to in 3 years at 10% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹54400 at 5% per year for 2 years (in ₹)?
20. 20.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.What amount will ₹4800 grow to in 3 years at 25% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹12500. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹22400 at 5% per year for 2 years (in ₹)?
24. 24.A town has 60000 people. The population grows by 4% every year. What will the population be after 2 years?
25. 25.What amount will ₹2600 grow to in 1 year at 10% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹44000 at 20% per year for 1 year, compounded every year (in ₹).
27. 27.A town has 32600 people. The population grows by 5% every year. What will the population be after 1 year?
28. 28.What amount will ₹52500 grow to in 1 year at 20% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 11500 people. The population grows by 20% every year. What will the population be after 1 year?
31. 31.What amount will ₹30400 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.A town has 25000 people. The population grows by 20% every year. What will the population be after 3 years?
33. 33.Find the compound interest on ₹30800 at 4% per year for 1 year, compounded every year (in ₹).
34. 34.A town has 28200 people. The population grows by 20% every year. What will the population be after 1 year?
35. 35.Find the compound interest on ₹32100 at 12% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹4300 at 10% per year for 2 years (in ₹)?
37. 37.What amount will ₹12500 grow to in 2 years at 8% per year compound interest (in ₹)?
38. 38.A town has 55000 people. The population grows by 8% every year. What will the population be after 2 years?
39. 39.What amount will ₹16200 grow to in 1 year at 5% per year compound interest (in ₹)?
40. 40.What amount will ₹54100 grow to in 2 years at 10% per year compound interest (in ₹)?

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