Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 135 · 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 is the difference between the compound interest and the simple interest on ₹23200 at 5% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹56500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
3. 3.Find the compound interest on ₹24200 at 10% per year for 2 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹4400 at 20% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹12200 grow to in 1 year at 8% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹18400 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹20000 grow to in 2 years at 8% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹6400 at 25% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹48800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹4400 at 15% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹4200 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹12000 at 20% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹14800 at 25% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹44500 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹19300 at 20% per year for 2 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹49000 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.What amount will ₹7100 grow to in 1 year at 4% per year compound interest (in ₹)?
22. 22.What amount will ₹8900 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.What amount will ₹47600 grow to in 2 years at 15% per year compound interest (in ₹)?
24. 24.A town has 2500 people. The population grows by 4% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
26. 26.A town has 7600 people. The population grows by 20% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
28. 28.What amount will ₹8000 grow to in 3 years at 25% per year compound interest (in ₹)?
29. 29.A town has 14800 people. The population grows by 12% every year. What will the population be after 1 year?
30. 30.What amount will ₹50000 grow to in 2 years at 12% per year compound interest (in ₹)?
31. 31.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
32. 32.What amount will ₹24000 grow to in 3 years at 20% per year compound interest (in ₹)?
33. 33.A town has 23600 people. The population grows by 20% every year. What will the population be after 2 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹8800 at 25% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹54900 at 10% per year for 2 years (in ₹)?
36. 36.What amount will ₹19000 grow to in 1 year at 8% per year compound interest (in ₹)?
37. 37.What amount will ₹47600 grow to in 1 year at 10% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹22300 at 25% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹20000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
40. 40.A scooter is worth ₹32500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?

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