Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 756 · 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 ₹8600 at 20% per year for 2 years (in ₹)?
2. 2.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹25600 at 25% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹4300 at 4% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹40800 grow to in 2 years at 5% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹50000 at 25% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
8. 8.What amount will ₹20400 grow to in 2 years at 25% per year compound interest (in ₹)?
9. 9.What amount will ₹23900 grow to in 1 year at 15% per year compound interest (in ₹)?
10. 10.What amount will ₹7800 grow to in 1 year at 8% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹13600 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.A scooter is worth ₹51600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
13. 13.What amount will ₹49500 grow to in 1 year at 8% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹54000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
15. 15.What amount will ₹38400 grow to in 1 year at 10% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹18800 at 15% per year for 2 years (in ₹)?
17. 17.A scooter is worth ₹42500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹12000 at 15% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹25900 at 5% per year for 1 year, compounded every year (in ₹).
21. 21.A town has 58800 people. The population grows by 10% every year. What will the population be after 1 year?
22. 22.A scooter is worth ₹22400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
23. 23.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹51800 at 10% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹30000 at 8% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹42500 at 4% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹25000 grow to in 2 years at 12% per year compound interest (in ₹)?
28. 28.What amount will ₹37200 grow to in 2 years at 25% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹46600 at 8% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 8400 people. The population grows by 20% every year. What will the population be after 2 years?
31. 31.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
32. 32.What amount will ₹42800 grow to in 2 years at 5% per year compound interest (in ₹)?
33. 33.What amount will ₹18000 grow to in 2 years at 10% per year compound interest (in ₹)?
34. 34.What amount will ₹52000 grow to in 1 year at 5% per year compound interest (in ₹)?
35. 35.What amount will ₹17000 grow to in 3 years at 10% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹12600 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹40000 grow to in 2 years at 12% per year compound interest (in ₹)?
39. 39.A town has 16900 people. The population grows by 4% every year. What will the population be after 1 year?
40. 40.What amount will ₹15500 grow to in 3 years at 20% per year compound interest (in ₹)?

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