Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 30 · 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 ₹45500 at 20% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 11700 people. The population grows by 4% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹45600 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹59100 at 20% per year for 2 years (in ₹)?
5. 5.What amount will ₹6400 grow to in 1 year at 12% per year compound interest (in ₹)?
6. 6.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
7. 7.What amount will ₹45000 grow to in 2 years at 8% per year compound interest (in ₹)?
8. 8.A town has 52000 people. The population grows by 20% every year. What will the population be after 3 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹24000 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹2700 at 15% per year for 1 year, compounded every year (in ₹).
11. 11.What amount will ₹2500 grow to in 2 years at 12% per year compound interest (in ₹)?
12. 12.What amount will ₹43700 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
14. 14.What amount will ₹13200 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.A town has 23300 people. The population grows by 5% every year. What will the population be after 1 year?
16. 16.What amount will ₹13100 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹19600 at 25% per year for 2 years (in ₹)?
18. 18.A town has 15900 people. The population grows by 15% every year. What will the population be after 1 year?
19. 19.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹59600 at 5% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.A town has 21200 people. The population grows by 15% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹40000 at 12% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹14100 at 10% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹42300 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.A town has 37500 people. The population grows by 12% every year. What will the population be after 2 years?
28. 28.What amount will ₹59400 grow to in 1 year at 8% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹42500 at 20% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹28800 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹41600 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹19600 at 15% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹10000 at 12% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹43500 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹51200 at 15% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹18800. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹9500 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).

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