Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 154 · 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 amount will ₹58000 grow to in 1 year at 4% per year compound interest (in ₹)?
2. 2.A town has 51000 people. The population grows by 10% every year. What will the population be after 3 years?
3. 3.What amount will ₹50000 grow to in 2 years at 25% per year compound interest (in ₹)?
4. 4.What amount will ₹14400 grow to in 3 years at 25% per year compound interest (in ₹)?
5. 5.A town has 54900 people. The population grows by 5% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
7. 7.What amount will ₹13000 grow to in 3 years at 10% per year compound interest (in ₹)?
8. 8.What amount will ₹7500 grow to in 1 year at 15% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
10. 10.What amount will ₹40300 grow to in 1 year at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹13900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
14. 14.Find the compound interest on ₹12400 at 10% per year for 1 year, compounded every year (in ₹).
15. 15.A town has 45700 people. The population grows by 8% every year. What will the population be after 1 year?
16. 16.Find the compound interest on ₹42800 at 20% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹15900 at 20% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹49500 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹55200 grow to in 1 year at 25% per year compound interest (in ₹)?
21. 21.A town has 16500 people. The population grows by 15% every year. What will the population be after 1 year?
22. 22.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹27000 at 20% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.A scooter is worth ₹54200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹43000 at 20% per year for 3 years, compounded every year (in ₹).
28. 28.A town has 45000 people. The population grows by 4% every year. What will the population be after 2 years?
29. 29.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹39600 at 10% per year for 1 year, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹32400 at 5% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹21600 at 15% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹17200 at 15% per year for 2 years (in ₹)?
34. 34.What amount will ₹13500 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
37. 37.A scooter is worth ₹30000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
38. 38.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹39400 at 10% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹3000 at 5% per year for 1 year, compounded every year (in ₹).

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