Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 685 · 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.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
2. 2.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
3. 3.A scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
4. 4.A scooter is worth ₹27700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
5. 5.What amount will ₹29600 grow to in 2 years at 5% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹45000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.What amount will ₹27100 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
10. 10.A town has 11500 people. The population grows by 20% every year. What will the population be after 3 years?
11. 11.A town has 58500 people. The population grows by 20% every year. What will the population be after 3 years?
12. 12.Find the compound interest on ₹6800 at 10% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹15600 at 25% per year for 2 years (in ₹)?
14. 14.A town has 16300 people. The population grows by 10% every year. What will the population be after 2 years?
15. 15.What is the difference between the compound interest and the simple interest on ₹21200 at 5% per year for 2 years (in ₹)?
16. 16.What amount will ₹31200 grow to in 2 years at 15% per year compound interest (in ₹)?
17. 17.What amount will ₹47500 grow to in 2 years at 8% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹15600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
19. 19.Find the compound interest on ₹24800 at 5% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
21. 21.A town has 37400 people. The population grows by 12% every year. What will the population be after 1 year?
22. 22.What amount will ₹54200 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.What amount will ₹32000 grow to in 3 years at 25% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹22000 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.A scooter is worth ₹3700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹42500 at 8% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹37200 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹2500 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹43000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
32. 32.Find the compound interest on ₹58000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.A town has 54800 people. The population grows by 5% every year. What will the population be after 1 year?
34. 34.What is the difference between the compound interest and the simple interest on ₹58900 at 10% per year for 2 years (in ₹)?
35. 35.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
36. 36.Find the compound interest on ₹22900 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.What amount will ₹36100 grow to in 1 year at 8% per year compound interest (in ₹)?
38. 38.What amount will ₹34600 grow to in 1 year at 10% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?

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