Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 347 · 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 ₹16000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
2. 2.Find the compound interest on ₹36800 at 25% per year for 3 years, compounded every year (in ₹).
3. 3.What amount will ₹3200 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.What amount will ₹27500 grow to in 2 years at 4% per year compound interest (in ₹)?
5. 5.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹57600 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹9100 at 4% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹42500 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 41900 people. The population grows by 5% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹40000 at 4% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹12000 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹47700 at 4% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 23500 people. The population grows by 20% every year. What will the population be after 3 years?
14. 14.Find the compound interest on ₹16800 at 25% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹43600 at 25% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹16800 at 15% per year for 2 years (in ₹)?
18. 18.A town has 23400 people. The population grows by 5% every year. What will the population be after 1 year?
19. 19.A scooter is worth ₹35500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹17500 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹49000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹10800 at 25% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹26600 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.What amount will ₹49000 grow to in 2 years at 20% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹25600 at 15% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹47900 at 20% per year for 2 years (in ₹)?
27. 27.A town has 18300 people. The population grows by 10% every year. What will the population be after 2 years?
28. 28.Find the compound interest on ₹15500 at 4% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹25700 at 15% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
31. 31.A town has 30000 people. The population grows by 4% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹28800 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹6400 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.What amount will ₹26400 grow to in 2 years at 15% per year compound interest (in ₹)?
35. 35.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
36. 36.A town has 13700 people. The population grows by 15% every year. What will the population be after 1 year?
37. 37.What amount will ₹33700 grow to in 2 years at 20% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹5600 at 10% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹51000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
40. 40.Find the compound interest on ₹39000 at 10% per year for 1 year, compounded every year (in ₹).

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