Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 41 · 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 ₹50300. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
2. 2.What amount will ₹20000 grow to in 1 year at 8% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹12500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
4. 4.A scooter is worth ₹3400. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
5. 5.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹54900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
7. 7.Find the compound interest on ₹17900 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹22800 at 25% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹47500 at 8% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 20900 people. The population grows by 10% every year. What will the population be after 2 years?
11. 11.What is the difference between the compound interest and the simple interest on ₹3800 at 20% per year for 2 years (in ₹)?
12. 12.What amount will ₹26800 grow to in 2 years at 20% per year compound interest (in ₹)?
13. 13.A town has 18700 people. The population grows by 12% every year. What will the population be after 1 year?
14. 14.What amount will ₹34800 grow to in 2 years at 25% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹44900 at 4% per year for 1 year, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹22400 at 15% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?
20. 20.What amount will ₹37200 grow to in 2 years at 5% per year compound interest (in ₹)?
21. 21.What amount will ₹21100 grow to in 1 year at 8% per year compound interest (in ₹)?
22. 22.What amount will ₹18100 grow to in 1 year at 20% per year compound interest (in ₹)?
23. 23.A town has 43300 people. The population grows by 25% every year. What will the population be after 1 year?
24. 24.A scooter is worth ₹37300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹49200 at 25% per year for 2 years (in ₹)?
26. 26.What amount will ₹11400 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.A town has 32000 people. The population grows by 15% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹25700 at 10% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹39200. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
32. 32.Find the compound interest on ₹25400 at 4% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹26700 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
35. 35.What amount will ₹47500 grow to in 3 years at 20% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹45000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹38000 at 15% per year for 2 years (in ₹)?
38. 38.A town has 36400 people. The population grows by 25% every year. What will the population be after 2 years?
39. 39.A town has 6800 people. The population grows by 4% every year. What will the population be after 1 year?
40. 40.What is the difference between the compound interest and the simple interest on ₹18000 at 5% per year for 2 years (in ₹)?

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