Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 847 · 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 ₹17700 at 12% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
3. 3.What amount will ₹12000 grow to in 2 years at 15% per year compound interest (in ₹)?
4. 4.A town has 22500 people. The population grows by 8% every year. What will the population be after 2 years?
5. 5.A scooter is worth ₹17500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
6. 6.Find the compound interest on ₹25800 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹58200 at 20% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹12600 at 10% per year for 2 years (in ₹)?
9. 9.What amount will ₹15500 grow to in 3 years at 20% per year compound interest (in ₹)?
10. 10.A town has 44900 people. The population grows by 8% every year. What will the population be after 1 year?
11. 11.A town has 47700 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.What amount will ₹21000 grow to in 3 years at 20% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹54700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
14. 14.What amount will ₹47000 grow to in 1 year at 25% per year compound interest (in ₹)?
15. 15.What amount will ₹15000 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.A town has 52500 people. The population grows by 8% every year. What will the population be after 2 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹47900 at 10% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹35600 at 15% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
20. 20.A town has 24900 people. The population grows by 20% every year. What will the population be after 1 year?
21. 21.What is the difference between the compound interest and the simple interest on ₹56100 at 10% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹29900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹18200 at 4% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹4400 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹33700 at 20% per year for 1 year, compounded every year (in ₹).
28. 28.A scooter is worth ₹22500. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹29700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹2500 at 8% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹30000 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹23500 grow to in 1 year at 15% per year compound interest (in ₹)?
35. 35.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹24500 at 20% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹46100 at 4% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹28200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
39. 39.Find the compound interest on ₹9500 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹49600 at 25% per year for 3 years, compounded every year (in ₹).

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