Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 346 · 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 ₹49300 grow to in 1 year at 8% per year compound interest (in ₹)?
2. 2.What amount will ₹43200 grow to in 3 years at 25% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹6600 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹46000 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 ₹45600 at 15% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
8. 8.What amount will ₹9900 grow to in 1 year at 8% per year compound interest (in ₹)?
9. 9.A town has 45000 people. The population grows by 12% every year. What will the population be after 2 years?
10. 10.What amount will ₹30800 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹40000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
12. 12.A scooter is worth ₹3000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
14. 14.What amount will ₹47500 grow to in 2 years at 12% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹12700 at 20% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹10400 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹14400 at 25% per year for 3 years, compounded every year (in ₹).
18. 18.What amount will ₹30900 grow to in 1 year at 20% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
21. 21.A town has 36000 people. The population grows by 20% every year. What will the population be after 3 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹31200 at 5% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹34200 at 10% per year for 1 year, compounded every year (in ₹).
24. 24.A town has 47500 people. The population grows by 20% every year. What will the population be after 3 years?
25. 25.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹55000 at 10% per year for 2 years (in ₹)?
27. 27.What amount will ₹33200 grow to in 2 years at 25% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
29. 29.What amount will ₹36300 grow to in 1 year at 8% per year compound interest (in ₹)?
30. 30.What amount will ₹49900 grow to in 1 year at 15% per year compound interest (in ₹)?
31. 31.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹6000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹9300 at 8% per year for 1 year, compounded every year (in ₹).
34. 34.A scooter is worth ₹45700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
35. 35.A scooter is worth ₹41200. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
36. 36.A town has 5000 people. The population grows by 10% every year. What will the population be after 3 years?
37. 37.What amount will ₹54300 grow to in 1 year at 20% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹47100 at 10% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹31500 grow to in 1 year at 8% per year compound interest (in ₹)?

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