Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 369 · 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 ₹47200 grow to in 1 year at 5% per year compound interest (in ₹)?
2. 2.A town has 55000 people. The population grows by 4% every year. What will the population be after 2 years?
3. 3.Find the compound interest on ₹49100 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹11700. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
6. 6.Find the compound interest on ₹9300 at 4% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹53100 at 4% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹47600 at 25% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹53600 at 5% per year for 2 years (in ₹)?
10. 10.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
11. 11.Find the compound interest on ₹52500 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
13. 13.What amount will ₹30000 grow to in 3 years at 10% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹18600 at 4% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹16800 at 15% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹54200. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
17. 17.What amount will ₹60000 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹6300 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.A town has 27000 people. The population grows by 10% every year. What will the population be after 3 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹26100 at 10% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹47200 at 15% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹34400 at 15% per year for 2 years (in ₹)?
24. 24.A town has 35000 people. The population grows by 10% every year. What will the population be after 3 years?
25. 25.A scooter is worth ₹24000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
26. 26.Find the compound interest on ₹48100 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹58600 at 12% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹56000 at 25% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹27200 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹38400 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹8800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
34. 34.What amount will ₹32100 grow to in 1 year at 25% per year compound interest (in ₹)?
35. 35.A town has 33600 people. The population grows by 15% every year. What will the population be after 2 years?
36. 36.What amount will ₹11800 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.What amount will ₹6400 grow to in 3 years at 25% per year compound interest (in ₹)?
39. 39.A town has 46300 people. The population grows by 25% every year. What will the population be after 1 year?
40. 40.A scooter is worth ₹15000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?

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