Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 86 · 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 ₹7500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
2. 2.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
3. 3.What amount will ₹27000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹34400 at 5% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹23400 at 20% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹12500 at 8% per year for 2 years, compounded every year (in ₹).
7. 7.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
8. 8.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹34500 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹60000 at 10% per year for 3 years, compounded every year (in ₹).
11. 11.What amount will ₹55000 grow to in 3 years at 20% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹52800 at 25% per year for 2 years (in ₹)?
13. 13.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
14. 14.A town has 28000 people. The population grows by 25% every year. What will the population be after 2 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹34800 at 15% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹22400 at 25% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹2000 grow to in 2 years at 15% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹13700 at 20% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹41700 at 4% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹8100 at 4% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹27100 grow to in 1 year at 10% per year compound interest (in ₹)?
24. 24.What amount will ₹19800 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.What amount will ₹2400 grow to in 2 years at 25% per year compound interest (in ₹)?
26. 26.What amount will ₹44000 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹25400 at 10% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹39600. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
32. 32.A town has 25000 people. The population grows by 8% every year. What will the population be after 2 years?
33. 33.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹48400 at 20% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹10800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
36. 36.Find the compound interest on ₹37000 at 10% per year for 3 years, compounded every year (in ₹).
37. 37.What amount will ₹47500 grow to in 2 years at 4% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹41900 at 20% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹15300 at 10% per year for 2 years (in ₹)?

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