Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 487 · 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 ₹44000 grow to in 3 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹7400. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
3. 3.What amount will ₹44300 grow to in 1 year at 25% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹48900 at 20% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹50600 at 20% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹52900 at 10% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹21900 at 20% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹44400 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹54400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
11. 11.What amount will ₹47100 grow to in 2 years at 20% per year compound interest (in ₹)?
12. 12.What amount will ₹26400 grow to in 2 years at 15% per year compound interest (in ₹)?
13. 13.What amount will ₹42100 grow to in 1 year at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹49500 at 8% per year for 1 year, compounded every year (in ₹).
15. 15.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
16. 16.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
17. 17.What amount will ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹14400 at 25% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹37500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
20. 20.A scooter is worth ₹24400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹58400 at 15% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹40400 at 20% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹30800 at 25% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
25. 25.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
26. 26.Find the compound interest on ₹40400 at 5% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹45600 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹13900 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹23600 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹10400 at 15% per year for 2 years (in ₹)?
34. 34.What amount will ₹45000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹12700 at 10% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹25600 at 8% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹34000 grow to in 3 years at 20% per year compound interest (in ₹)?
38. 38.A town has 50400 people. The population grows by 15% every year. What will the population be after 2 years?
39. 39.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹9600 at 15% per year for 2 years, compounded every year (in ₹).

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