Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 288 · 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 ₹20800 at 15% per year for 2 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹58100 at 10% per year for 1 year, compounded every year (in ₹).
3. 3.A scooter is worth ₹9000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
4. 4.A town has 49400 people. The population grows by 25% every year. What will the population be after 1 year?
5. 5.A town has 20700 people. The population grows by 8% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹31200 at 20% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹59200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
9. 9.What amount will ₹19100 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹10000 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹13600 at 15% per year for 2 years (in ₹)?
12. 12.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
13. 13.A town has 51200 people. The population grows by 25% every year. What will the population be after 3 years?
14. 14.Find the compound interest on ₹5400 at 25% 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 25% per year for 2 years (in ₹)?
16. 16.What amount will ₹34000 grow to in 2 years at 10% per year compound interest (in ₹)?
17. 17.What amount will ₹50700 grow to in 1 year at 4% per year compound interest (in ₹)?
18. 18.What amount will ₹5200 grow to in 2 years at 15% per year compound interest (in ₹)?
19. 19.What amount will ₹34800 grow to in 1 year at 10% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹11700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
21. 21.What amount will ₹43300 grow to in 1 year at 15% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹8700 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.What amount will ₹33700 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹13200 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹36800 at 20% per year for 1 year, compounded every year (in ₹).
26. 26.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹32000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
28. 28.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹15000 at 8% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹25100 grow to in 1 year at 12% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹23600 at 20% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹36400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹30500 at 20% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹54900 grow to in 1 year at 5% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹25600. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
36. 36.What amount will ₹11700 grow to in 1 year at 20% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹14800 at 20% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹17100 grow to in 1 year at 4% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹31000 at 10% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?

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