Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 793 · 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 ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
2. 2.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
3. 3.What amount will ₹56500 grow to in 2 years at 20% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹47700 at 20% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹6000 at 5% per year for 2 years, compounded every year (in ₹).
6. 6.A town has 12800 people. The population grows by 25% every year. What will the population be after 3 years?
7. 7.A scooter is worth ₹42900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
8. 8.What amount will ₹52700 grow to in 1 year at 8% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹33000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹56200 at 20% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹28800 at 25% per year for 2 years (in ₹)?
12. 12.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
13. 13.A town has 60000 people. The population grows by 8% every year. What will the population be after 2 years?
14. 14.What is the difference between the compound interest and the simple interest on ₹32700 at 10% per year for 2 years (in ₹)?
15. 15.A town has 34300 people. The population grows by 5% every year. What will the population be after 1 year?
16. 16.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
17. 17.A scooter is worth ₹40000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹32800 at 5% per year for 2 years (in ₹)?
19. 19.A town has 34000 people. The population grows by 10% every year. What will the population be after 2 years?
20. 20.What amount will ₹27600 grow to in 2 years at 25% per year compound interest (in ₹)?
21. 21.What amount will ₹3500 grow to in 3 years at 20% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹52900 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹14600 at 15% per year for 1 year, compounded every year (in ₹).
24. 24.A town has 11700 people. The population grows by 10% every year. What will the population be after 1 year?
25. 25.Find the compound interest on ₹22300 at 12% per year for 1 year, compounded every year (in ₹).
26. 26.A town has 58100 people. The population grows by 4% every year. What will the population be after 1 year?
27. 27.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.What amount will ₹55800 grow to in 1 year at 15% per year compound interest (in ₹)?
29. 29.A scooter is worth ₹12500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
30. 30.A town has 43000 people. The population grows by 10% every year. What will the population be after 3 years?
31. 31.A scooter is worth ₹40000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
32. 32.What amount will ₹42000 grow to in 2 years at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹14400 at 15% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹51200 at 5% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹12800 at 4% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹60000 at 8% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹22300 at 20% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹14400 at 25% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?

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