Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 999 · 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 is the difference between the compound interest and the simple interest on ₹4400 at 5% per year for 2 years (in ₹)?
2. 2.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
3. 3.A scooter is worth ₹36900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹59200 at 15% per year for 2 years (in ₹)?
6. 6.What amount will ₹49200 grow to in 2 years at 25% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹31500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
8. 8.A town has 4500 people. The population grows by 25% every year. What will the population be after 1 year?
9. 9.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?
10. 10.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
11. 11.What amount will ₹32000 grow to in 3 years at 10% per year compound interest (in ₹)?
12. 12.What amount will ₹11200 grow to in 2 years at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹53400 grow to in 1 year at 10% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹56100 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹2000 at 25% per year for 2 years (in ₹)?
17. 17.A town has 29700 people. The population grows by 25% every year. What will the population be after 1 year?
18. 18.What amount will ₹32100 grow to in 2 years at 20% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹18200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
20. 20.A town has 53200 people. The population grows by 25% every year. What will the population be after 2 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹13600 at 5% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹2900. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
23. 23.What amount will ₹47600 grow to in 1 year at 20% per year compound interest (in ₹)?
24. 24.What amount will ₹57600 grow to in 2 years at 25% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹5000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹3200 at 8% per year for 1 year, compounded every year (in ₹).
27. 27.What amount will ₹42500 grow to in 2 years at 8% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹32000 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹49200 at 15% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹16900 grow to in 1 year at 20% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
32. 32.A scooter is worth ₹19300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹7700 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
35. 35.A town has 48000 people. The population grows by 25% every year. What will the population be after 3 years?
36. 36.What is the difference between the compound interest and the simple interest on ₹26800 at 25% per year for 2 years (in ₹)?
37. 37.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
39. 39.A town has 19500 people. The population grows by 20% every year. What will the population be after 1 year?
40. 40.Find the compound interest on ₹5200 at 5% per year for 2 years, compounded every year (in ₹).

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