Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 72 · 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 ₹41300 at 20% per year for 2 years (in ₹)?
2. 2.What amount will ₹17500 grow to in 1 year at 25% per year compound interest (in ₹)?
3. 3.What amount will ₹24000 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.A town has 6000 people. The population grows by 20% every year. What will the population be after 3 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹7200 at 5% per year for 2 years (in ₹)?
6. 6.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹59100 at 20% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹47000 at 8% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹21300 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹3800 at 4% per year for 1 year, compounded every year (in ₹).
13. 13.A scooter is worth ₹43400. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
14. 14.Find the compound interest on ₹52300 at 20% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹37600 at 25% per year for 2 years (in ₹)?
16. 16.What amount will ₹2500 grow to in 1 year at 25% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹59400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
19. 19.Find the compound interest on ₹27900 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹4500 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹50200 grow to in 2 years at 10% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹24900 at 10% per year for 2 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹48000 at 25% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹36600 at 12% per year for 1 year, compounded every year (in ₹).
25. 25.A scooter is worth ₹24000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹6400 at 5% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹50000 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹20600 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹58000 at 25% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹35800 grow to in 1 year at 5% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹16100 at 8% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹23500 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.What amount will ₹13400 grow to in 1 year at 20% per year compound interest (in ₹)?
35. 35.What amount will ₹12500 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.What amount will ₹40200 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹29300 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹12100 at 20% per year for 2 years (in ₹)?
39. 39.A town has 3500 people. The population grows by 25% every year. What will the population be after 1 year?
40. 40.Find the compound interest on ₹14400 at 5% per year for 2 years, compounded every year (in ₹).

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