Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 592 · 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.A town has 50800 people. The population grows by 15% every year. What will the population be after 1 year?
2. 2.A scooter is worth ₹57300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
3. 3.Find the compound interest on ₹40400 at 20% per year for 1 year, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹32400 at 5% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹31200. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
6. 6.Find the compound interest on ₹33600 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹26400. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹47600 at 15% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹4000 at 5% per year for 2 years (in ₹)?
11. 11.What amount will ₹46100 grow to in 1 year at 10% per year compound interest (in ₹)?
12. 12.What amount will ₹30000 grow to in 2 years at 4% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹38700 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹49200 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹23100 at 4% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹14100 grow to in 1 year at 8% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹22800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
18. 18.Find the compound interest on ₹11100 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹59000 at 20% per year for 3 years, compounded every year (in ₹).
20. 20.What amount will ₹24400 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
22. 22.A scooter is worth ₹47200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
23. 23.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
25. 25.What amount will ₹5000 grow to in 2 years at 8% per year compound interest (in ₹)?
26. 26.What amount will ₹4400 grow to in 2 years at 15% per year compound interest (in ₹)?
27. 27.What amount will ₹4000 grow to in 1 year at 4% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
29. 29.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
30. 30.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.A town has 19600 people. The population grows by 15% every year. What will the population be after 2 years?
32. 32.What amount will ₹8300 grow to in 1 year at 12% per year compound interest (in ₹)?
33. 33.What amount will ₹13400 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹7600 at 5% per year for 2 years, compounded every year (in ₹).
35. 35.A town has 9300 people. The population grows by 4% every year. What will the population be after 1 year?
36. 36.Find the compound interest on ₹17300 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹28900 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹10800 at 15% per year for 2 years, compounded every year (in ₹).
39. 39.A town has 5500 people. The population grows by 10% every year. What will the population be after 2 years?
40. 40.Find the compound interest on ₹30600 at 8% per year for 1 year, compounded every year (in ₹).

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