Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 342 · 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 amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
2. 2.A town has 33700 people. The population grows by 10% every year. What will the population be after 2 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹36000 at 15% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹17000 at 20% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹36900 at 20% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹32600 at 20% per year for 2 years (in ₹)?
8. 8.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹14600 at 20% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹8000 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.A town has 45000 people. The population grows by 12% every year. What will the population be after 2 years?
12. 12.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
13. 13.A town has 38800 people. The population grows by 25% every year. What will the population be after 2 years?
14. 14.What amount will ₹42100 grow to in 1 year at 25% per year compound interest (in ₹)?
15. 15.What amount will ₹59000 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹6400 at 4% per year for 1 year, compounded every year (in ₹).
17. 17.Find the compound interest on ₹43500 at 20% per year for 3 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹47500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
19. 19.A town has 5600 people. The population grows by 15% every year. What will the population be after 2 years?
20. 20.A scooter is worth ₹47000. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
21. 21.Find the compound interest on ₹10400 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹53600 at 25% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹16200 at 10% per year for 2 years (in ₹)?
24. 24.A scooter is worth ₹10400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
26. 26.A town has 44500 people. The population grows by 20% every year. What will the population be after 3 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
28. 28.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹55300 at 20% per year for 2 years (in ₹)?
30. 30.What amount will ₹39200 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹6900 at 10% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹6200 at 12% per year for 1 year, compounded every year (in ₹).
33. 33.Find the compound interest on ₹3200 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹12500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹58400 at 10% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹9000 at 20% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹32800 at 5% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹5000 at 20% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹24500 at 20% per year for 3 years, compounded every year (in ₹).

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