Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 903 · 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 amount will ₹47500 grow to in 3 years at 20% per year compound interest (in ₹)?
2. 2.What amount will ₹7000 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹13200 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹48700 grow to in 1 year at 12% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹54900 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹6400 at 25% per year for 2 years (in ₹)?
8. 8.A town has 46100 people. The population grows by 12% every year. What will the population be after 1 year?
9. 9.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹27800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
11. 11.What amount will ₹57200 grow to in 2 years at 20% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹7300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹47500 grow to in 1 year at 8% per year compound interest (in ₹)?
14. 14.A town has 7000 people. The population grows by 5% every year. What will the population be after 1 year?
15. 15.Find the compound interest on ₹17600 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹20400 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.A town has 52000 people. The population grows by 5% every year. What will the population be after 2 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹49500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
20. 20.Find the compound interest on ₹29000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 4200 people. The population grows by 20% every year. What will the population be after 2 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
23. 23.What amount will ₹14000 grow to in 3 years at 20% per year compound interest (in ₹)?
24. 24.A town has 28300 people. The population grows by 20% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹22300 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 ₹60000 at 12% per year for 2 years (in ₹)?
27. 27.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
28. 28.A town has 42900 people. The population grows by 12% every year. What will the population be after 1 year?
29. 29.A town has 2500 people. The population grows by 20% every year. What will the population be after 3 years?
30. 30.Find the compound interest on ₹53900 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹50800 at 25% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹32400 at 25% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹26000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
36. 36.A scooter is worth ₹38000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
37. 37.Find the compound interest on ₹51300 at 10% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.A town has 46500 people. The population grows by 20% every year. What will the population be after 3 years?
40. 40.What is the difference between the compound interest and the simple interest on ₹14400 at 15% per year for 2 years (in ₹)?

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