Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 231 · 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 ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.A town has 17900 people. The population grows by 20% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
4. 4.A town has 15500 people. The population grows by 12% every year. What will the population be after 1 year?
5. 5.A town has 46900 people. The population grows by 10% every year. What will the population be after 1 year?
6. 6.A scooter is worth ₹58400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
7. 7.Find the compound interest on ₹60000 at 10% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹28000 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹41900 at 5% per year for 1 year, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹24400 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹7000 grow to in 2 years at 10% per year compound interest (in ₹)?
12. 12.A town has 37800 people. The population grows by 4% every year. What will the population be after 1 year?
13. 13.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹13600 at 15% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹52800 at 15% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹56000 at 15% per year for 2 years (in ₹)?
17. 17.What amount will ₹8900 grow to in 1 year at 12% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹13900 at 20% per year for 2 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
21. 21.A town has 12700 people. The population grows by 4% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹35000 at 8% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹3900 at 10% per year for 2 years (in ₹)?
24. 24.What amount will ₹54000 grow to in 2 years at 15% per year compound interest (in ₹)?
25. 25.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹33400 at 20% per year for 2 years (in ₹)?
27. 27.A scooter is worth ₹28200. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
28. 28.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹18800 at 15% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹8000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹30500 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
36. 36.What amount will ₹53400 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹11600 at 5% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹35600 at 20% per year for 2 years, compounded every year (in ₹).
39. 39.What amount will ₹14400 grow to in 1 year at 20% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹55200 at 15% per year for 2 years (in ₹)?

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