Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 160 · 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 ₹25000 at 12% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹55200 at 5% per year for 2 years (in ₹)?
3. 3.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
4. 4.What amount will ₹34000 grow to in 2 years at 15% per year compound interest (in ₹)?
5. 5.A town has 53500 people. The population grows by 10% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
7. 7.What amount will ₹40100 grow to in 1 year at 8% per year compound interest (in ₹)?
8. 8.A town has 3000 people. The population grows by 4% every year. What will the population be after 1 year?
9. 9.A town has 52800 people. The population grows by 5% every year. What will the population be after 2 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹47800 at 5% per year for 1 year, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹3000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹39400 at 25% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹47500 at 20% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹36700 at 4% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.A town has 11000 people. The population grows by 10% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹29500 at 20% per year for 3 years, compounded every year (in ₹).
22. 22.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹2800 at 15% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹39600 at 25% per year for 2 years (in ₹)?
26. 26.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.What amount will ₹12500 grow to in 2 years at 4% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹31600 at 25% per year for 2 years, compounded every year (in ₹).
29. 29.A scooter is worth ₹10300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
30. 30.Find the compound interest on ₹25000 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹29700 grow to in 1 year at 20% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹42500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹59500 grow to in 1 year at 12% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹6300 at 10% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.A town has 53400 people. The population grows by 10% every year. What will the population be after 1 year?
39. 39.A scooter is worth ₹4600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?

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