Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 669 · 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 ₹34800 at 20% per year for 2 years (in ₹)?
2. 2.What amount will ₹56300 grow to in 1 year at 12% per year compound interest (in ₹)?
3. 3.A town has 15000 people. The population grows by 4% every year. What will the population be after 2 years?
4. 4.What amount will ₹51800 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹47100 at 15% per year for 1 year, compounded every year (in ₹).
7. 7.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
8. 8.A scooter is worth ₹6500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
9. 9.What amount will ₹44900 grow to in 1 year at 4% per year compound interest (in ₹)?
10. 10.A town has 10000 people. The population grows by 25% every year. What will the population be after 2 years?
11. 11.What amount will ₹5200 grow to in 2 years at 15% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹52000 at 20% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹30000 at 25% per year for 2 years (in ₹)?
16. 16.What amount will ₹2500 grow to in 2 years at 12% per year compound interest (in ₹)?
17. 17.What amount will ₹30300 grow to in 1 year at 15% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹55900 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹59300 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹41000 grow to in 3 years at 10% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
23. 23.A town has 35200 people. The population grows by 25% every year. What will the population be after 3 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹28800 at 25% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹23000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
26. 26.What amount will ₹12400 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹41600 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹21300 at 5% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹55000 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹11200 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹34900 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
34. 34.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
35. 35.A town has 42100 people. The population grows by 10% every year. What will the population be after 1 year?
36. 36.A town has 14400 people. The population grows by 25% every year. What will the population be after 3 years?
37. 37.Find the compound interest on ₹2300 at 12% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.What amount will ₹8500 grow to in 1 year at 25% per year compound interest (in ₹)?
40. 40.What amount will ₹42000 grow to in 2 years at 15% per year compound interest (in ₹)?

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