Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 463 · 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 ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
2. 2.What amount will ₹34800 grow to in 2 years at 5% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹30800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹4100 at 10% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
7. 7.Find the compound interest on ₹10400 at 15% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹12600 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 30000 people. The population grows by 8% every year. What will the population be after 2 years?
10. 10.What amount will ₹12800 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹35900 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹34400 at 15% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹49400 grow to in 1 year at 10% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹12800 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
16. 16.What amount will ₹38000 grow to in 2 years at 15% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹3900 at 20% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹56700 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹5300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
20. 20.A town has 43200 people. The population grows by 25% every year. What will the population be after 3 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹14300 at 20% per year for 2 years (in ₹)?
22. 22.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹53600 at 5% per year for 2 years (in ₹)?
24. 24.What amount will ₹33900 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹56800 at 25% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹47700 at 10% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹17900 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹11600 grow to in 1 year at 12% per year compound interest (in ₹)?
31. 31.A town has 50200 people. The population grows by 20% every year. What will the population be after 2 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹49600 at 5% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹56000 at 5% per year for 2 years (in ₹)?
34. 34.A town has 57500 people. The population grows by 20% every year. What will the population be after 3 years?
35. 35.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹8700 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹20400 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹19900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
39. 39.What amount will ₹33600 grow to in 3 years at 25% per year compound interest (in ₹)?
40. 40.A town has 23800 people. The population grows by 25% every year. What will the population be after 1 year?

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