Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 563 · 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 ₹31600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
2. 2.Find the compound interest on ₹23300 at 25% per year for 1 year, compounded every year (in ₹).
3. 3.A town has 37300 people. The population grows by 10% every year. What will the population be after 2 years?
4. 4.What amount will ₹21600 grow to in 2 years at 25% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹49600 at 5% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹31000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹19300. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹15800 at 20% per year for 2 years (in ₹)?
9. 9.A town has 9500 people. The population grows by 20% every year. What will the population be after 1 year?
10. 10.What amount will ₹38400 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹20300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹47600 at 5% per year for 1 year, compounded every year (in ₹).
13. 13.A scooter is worth ₹50000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
14. 14.Find the compound interest on ₹25000 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹17500 grow to in 2 years at 12% per year compound interest (in ₹)?
16. 16.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
17. 17.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹17600 at 25% per year for 2 years (in ₹)?
19. 19.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
20. 20.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 32200 people. The population grows by 12% every year. What will the population be after 1 year?
22. 22.What amount will ₹40800 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹47900 at 20% per year for 2 years (in ₹)?
24. 24.What amount will ₹37700 grow to in 1 year at 20% per year compound interest (in ₹)?
25. 25.A town has 42200 people. The population grows by 5% every year. What will the population be after 1 year?
26. 26.What amount will ₹13000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.What amount will ₹55200 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 ₹27900 at 10% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹16400 at 10% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹8300 grow to in 1 year at 12% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹30500 at 20% per year for 3 years, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹47600 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹9100 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 ₹10000 at 12% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹14000 at 15% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹54000 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹40400 at 5% per year for 2 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹51300. Its value falls by 8% 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 ₹10200 at 20% per year for 2 years (in ₹)?

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