Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 488 · 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 ₹7600 at 25% per year for 2 years (in ₹)?
2. 2.A town has 46400 people. The population grows by 25% every year. What will the population be after 3 years?
3. 3.A scooter is worth ₹26500. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
4. 4.Find the compound interest on ₹60000 at 8% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹43600 at 10% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹28900 at 8% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
11. 11.What amount will ₹37500 grow to in 2 years at 12% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹30000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
13. 13.A scooter is worth ₹8700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
14. 14.Find the compound interest on ₹8500 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹21600 at 15% per year for 2 years (in ₹)?
16. 16.What amount will ₹22600 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
18. 18.What amount will ₹36200 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹35000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
20. 20.A town has 32000 people. The population grows by 25% every year. What will the population be after 3 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹19200 at 5% per year for 2 years (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.What amount will ₹42500 grow to in 2 years at 12% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹54900 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.A town has 21900 people. The population grows by 20% every year. What will the population be after 2 years?
29. 29.Find the compound interest on ₹36200 at 12% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹12800 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹34400 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹52900 at 20% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹9100 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹24000 at 20% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹50800 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹27200 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?

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