Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 648 · 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 ₹59200 at 25% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹11000 at 20% per year for 3 years, compounded every year (in ₹).
3. 3.What amount will ₹36200 grow to in 2 years at 20% per year compound interest (in ₹)?
4. 4.A town has 16500 people. The population grows by 4% every year. What will the population be after 1 year?
5. 5.What amount will ₹37000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹41100. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
8. 8.A scooter is worth ₹34600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
9. 9.Find the compound interest on ₹27000 at 4% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹31200 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 ₹56400 at 5% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹49600 at 10% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹15100 grow to in 1 year at 12% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹44000 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹59900 grow to in 2 years at 10% per year compound interest (in ₹)?
18. 18.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
19. 19.A town has 4300 people. The population grows by 10% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹18000 at 20% per year for 3 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹58200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
22. 22.Find the compound interest on ₹58400 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 ₹12400 at 25% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹9000 at 12% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹22400 at 15% per year for 2 years (in ₹)?
27. 27.What amount will ₹8900 grow to in 1 year at 25% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹32500 at 4% per year for 2 years, compounded every year (in ₹).
31. 31.Find the compound interest on ₹36600 at 8% per year for 1 year, compounded every year (in ₹).
32. 32.A town has 28400 people. The population grows by 20% every year. What will the population be after 2 years?
33. 33.Find the compound interest on ₹23600 at 25% per year for 1 year, compounded every year (in ₹).
34. 34.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
35. 35.What is the difference between the compound interest and the simple interest on ₹25200 at 25% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹48400 at 20% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹48000 at 20% per year for 2 years (in ₹)?
38. 38.What amount will ₹37500 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
40. 40.A town has 12000 people. The population grows by 10% every year. What will the population be after 3 years?

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