Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 805 · 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 ₹32000 at 25% per year for 2 years (in ₹)?
2. 2.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹20000 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.A town has 48000 people. The population grows by 25% every year. What will the population be after 3 years?
5. 5.What amount will ₹13500 grow to in 1 year at 8% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹29400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
7. 7.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹13100 at 25% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹2900 grow to in 1 year at 8% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹7600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹46600 at 20% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹12800 at 25% per year for 2 years (in ₹)?
13. 13.What amount will ₹34200 grow to in 1 year at 20% per year compound interest (in ₹)?
14. 14.A town has 50000 people. The population grows by 15% every year. What will the population be after 2 years?
15. 15.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
16. 16.What amount will ₹18600 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.What amount will ₹6400 grow to in 2 years at 25% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹20000 at 15% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
20. 20.A town has 9500 people. The population grows by 20% every year. What will the population be after 3 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹17500 at 20% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹6000 at 15% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹32600 at 10% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹23600 at 5% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹6400 at 25% per year for 2 years, compounded every year (in ₹).
28. 28.A scooter is worth ₹44000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹5200 at 25% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
33. 33.What amount will ₹14000 grow to in 2 years at 10% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹8800 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹19400 at 20% per year for 2 years (in ₹)?
37. 37.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹53000 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹28200 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹59000 at 12% per year for 1 year, compounded every year (in ₹).

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