Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 245 · 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.Find the compound interest on ₹36900 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹33200 at 25% per year for 2 years (in ₹)?
3. 3.A town has 10800 people. The population grows by 5% every year. What will the population be after 2 years?
4. 4.Find the compound interest on ₹35200 at 25% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
6. 6.A scooter is worth ₹16000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹19600 at 8% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹51500 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹4000 grow to in 3 years at 20% per year compound interest (in ₹)?
10. 10.A town has 45200 people. The population grows by 25% every year. What will the population be after 2 years?
11. 11.What amount will ₹9600 grow to in 1 year at 15% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹12000 at 25% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹21600 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹26900 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.A town has 16200 people. The population grows by 10% every year. What will the population be after 2 years?
16. 16.What is the difference between the compound interest and the simple interest on ₹53100 at 20% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹39200 at 8% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹25200 at 20% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹37800 at 4% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹50000 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹11200 at 25% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹17400 at 10% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹44200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹21200 at 5% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹4000 at 25% per year for 2 years (in ₹)?
31. 31.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹54200 at 10% per year for 1 year, compounded every year (in ₹).
33. 33.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹6800 at 25% per year for 2 years (in ₹)?
35. 35.What amount will ₹40200 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹4100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹5300 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.A town has 12500 people. The population grows by 4% every year. What will the population be after 2 years?
39. 39.What is the difference between the compound interest and the simple interest on ₹54000 at 10% per year for 2 years (in ₹)?
40. 40.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?

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