Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 924 · 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 ₹32000 at 10% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹20400 at 25% per year for 1 year, compounded every year (in ₹).
3. 3.A scooter is worth ₹2100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
4. 4.A scooter is worth ₹48000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
6. 6.A town has 26400 people. The population grows by 12% every year. What will the population be after 1 year?
7. 7.Find the compound interest on ₹3100 at 4% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹40000 at 10% per year for 3 years, compounded every year (in ₹).
9. 9.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
10. 10.A town has 43600 people. The population grows by 25% every year. What will the population be after 1 year?
11. 11.Find the compound interest on ₹14400 at 25% per year for 2 years, compounded every year (in ₹).
12. 12.A town has 23700 people. The population grows by 10% every year. What will the population be after 2 years?
13. 13.Find the compound interest on ₹35300 at 12% per year for 1 year, compounded every year (in ₹).
14. 14.A scooter is worth ₹5300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
15. 15.A town has 25000 people. The population grows by 4% every year. What will the population be after 2 years?
16. 16.What amount will ₹54800 grow to in 2 years at 25% per year compound interest (in ₹)?
17. 17.What amount will ₹24200 grow to in 2 years at 10% per year compound interest (in ₹)?
18. 18.What amount will ₹27500 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 ₹56400 at 5% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹24600 at 20% per year for 2 years (in ₹)?
21. 21.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
22. 22.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
23. 23.What amount will ₹44100 grow to in 1 year at 8% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹23200 at 15% per year for 2 years (in ₹)?
25. 25.A town has 47500 people. The population grows by 8% every year. What will the population be after 2 years?
26. 26.Find the compound interest on ₹23600 at 5% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹36100 grow to in 1 year at 8% per year compound interest (in ₹)?
28. 28.What amount will ₹8000 grow to in 2 years at 5% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹3900 at 12% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹38600 at 8% per year for 1 year, compounded every year (in ₹).
31. 31.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
32. 32.Find the compound interest on ₹19300 at 20% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹47500 grow to in 3 years at 20% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹37100 at 10% per year for 2 years (in ₹)?
35. 35.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
36. 36.What amount will ₹31200 grow to in 2 years at 10% per year compound interest (in ₹)?
37. 37.A town has 7700 people. The population grows by 15% every year. What will the population be after 1 year?
38. 38.Find the compound interest on ₹28300 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.A town has 22300 people. The population grows by 12% every year. What will the population be after 1 year?
40. 40.A scooter is worth ₹52000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?

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