Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 607 · 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 ₹36800 at 5% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹16400 at 15% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹12800. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
4. 4.Find the compound interest on ₹19400 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹4100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
6. 6.Find the compound interest on ₹26000 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹44400 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹30400 at 15% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹31200 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹22400 at 5% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 6000 people. The population grows by 10% every year. What will the population be after 3 years?
12. 12.A town has 26400 people. The population grows by 25% every year. What will the population be after 2 years?
13. 13.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹16600 at 20% per year for 2 years (in ₹)?
15. 15.What amount will ₹35000 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹14400 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹56000 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹54800 at 5% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹16800. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹52800 at 15% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹5200 at 15% per year for 2 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹36000 at 5% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹21000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
24. 24.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹59900 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹33600 at 10% per year for 2 years (in ₹)?
27. 27.What amount will ₹4000 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹24000 at 5% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹37100 at 20% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
31. 31.A scooter is worth ₹11500. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
32. 32.What amount will ₹43100 grow to in 1 year at 4% per year compound interest (in ₹)?
33. 33.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹42000 at 10% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹32100 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.A town has 30300 people. The population grows by 20% every year. What will the population be after 2 years?
37. 37.A scooter is worth ₹29300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹50000 grow to in 2 years at 4% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹50000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.A scooter is worth ₹27900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?

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