Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 680 · 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 ₹32400 at 10% per year for 2 years (in ₹)?
2. 2.What amount will ₹9700 grow to in 1 year at 8% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹13600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
4. 4.A town has 9500 people. The population grows by 20% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹36000 at 20% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹12600 at 10% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹23200 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹51200 at 5% per year for 2 years, compounded every year (in ₹).
9. 9.What amount will ₹47700 grow to in 1 year at 12% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹58500 at 5% per year for 1 year, compounded every year (in ₹).
11. 11.A scooter is worth ₹29100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
12. 12.A town has 41000 people. The population grows by 20% every year. What will the population be after 3 years?
13. 13.Find the compound interest on ₹14800 at 5% per year for 2 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹13300 at 10% per year for 2 years (in ₹)?
15. 15.What amount will ₹18500 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.What amount will ₹5000 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
18. 18.What amount will ₹47200 grow to in 2 years at 20% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹30000 at 5% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹27200 at 5% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹44300 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
24. 24.A town has 42500 people. The population grows by 12% every year. What will the population be after 2 years?
25. 25.A town has 14100 people. The population grows by 8% every year. What will the population be after 1 year?
26. 26.What is the difference between the compound interest and the simple interest on ₹52100 at 10% per year for 2 years (in ₹)?
27. 27.What amount will ₹17500 grow to in 2 years at 4% per year compound interest (in ₹)?
28. 28.What amount will ₹16000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹54100 at 10% per year for 2 years (in ₹)?
31. 31.What amount will ₹52400 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.A scooter is worth ₹38500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
33. 33.What amount will ₹59300 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹51200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
37. 37.Find the compound interest on ₹59600 at 25% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹35100 at 20% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹15000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?

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