Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 185 · 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 ₹21500 grow to in 1 year at 25% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹40000 at 8% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 40000 people. The population grows by 25% every year. What will the population be after 3 years?
4. 4.Find the compound interest on ₹6000 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹40000 grow to in 2 years at 4% per year compound interest (in ₹)?
6. 6.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
7. 7.What amount will ₹25000 grow to in 2 years at 10% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
9. 9.Find the compound interest on ₹47400 at 15% per year for 1 year, compounded every year (in ₹).
10. 10.A town has 54000 people. The population grows by 25% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹37500 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹42500 grow to in 1 year at 8% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹39900 at 10% per year for 2 years (in ₹)?
14. 14.What amount will ₹20000 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.A scooter is worth ₹51200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
17. 17.A town has 4800 people. The population grows by 25% every year. What will the population be after 3 years?
18. 18.Find the compound interest on ₹24100 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹49800 at 4% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹17800 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.A town has 57500 people. The population grows by 8% every year. What will the population be after 2 years?
22. 22.What amount will ₹22100 grow to in 2 years at 10% per year compound interest (in ₹)?
23. 23.What amount will ₹52800 grow to in 2 years at 20% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹48000 at 4% per year for 1 year, compounded every year (in ₹).
25. 25.A scooter is worth ₹27500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹32200 grow to in 1 year at 4% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹12800 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹14000 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹36800 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.A town has 48500 people. The population grows by 25% every year. What will the population be after 1 year?
33. 33.Find the compound interest on ₹33200 at 10% per year for 1 year, compounded every year (in ₹).
34. 34.Find the compound interest on ₹30900 at 25% per year for 1 year, compounded every year (in ₹).
35. 35.A scooter is worth ₹31000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
36. 36.What amount will ₹14000 grow to in 2 years at 10% per year compound interest (in ₹)?
37. 37.What amount will ₹52000 grow to in 3 years at 20% per year compound interest (in ₹)?
38. 38.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
39. 39.A scooter is worth ₹55100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹56700 at 10% per year for 2 years (in ₹)?

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