Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 684 · 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 ₹7200 at 20% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹48200 at 15% per year for 1 year, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹48800 at 25% per year for 2 years (in ₹)?
4. 4.A town has 42700 people. The population grows by 8% every year. What will the population be after 1 year?
5. 5.A scooter is worth ₹48100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
6. 6.Find the compound interest on ₹39000 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹53500 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹5200 at 25% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹2000 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹40800 at 12% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹7300. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹11500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
14. 14.A town has 50300 people. The population grows by 10% every year. What will the population be after 1 year?
15. 15.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
16. 16.A town has 6000 people. The population grows by 10% every year. What will the population be after 3 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹21400 at 20% per year for 2 years (in ₹)?
18. 18.What amount will ₹15400 grow to in 1 year at 25% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹45300 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹6400 grow to in 2 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹14500 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹10800 at 25% per year for 2 years, compounded every year (in ₹).
23. 23.A town has 46300 people. The population grows by 10% every year. What will the population be after 2 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹9400 at 20% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹38800 at 5% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹3200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹56400 at 5% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
30. 30.What amount will ₹34400 grow to in 2 years at 25% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹19400 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹6800 grow to in 2 years at 25% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹16000 at 20% per year for 2 years (in ₹)?
34. 34.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
35. 35.A town has 55000 people. The population grows by 10% every year. What will the population be after 3 years?
36. 36.What amount will ₹14500 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.A town has 52900 people. The population grows by 12% every year. What will the population be after 1 year?
38. 38.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
39. 39.What is the difference between the compound interest and the simple interest on ₹6000 at 25% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹56700 at 25% per year for 1 year, compounded every year (in ₹).

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