Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 399 · 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 ₹48100 grow to in 1 year at 25% per year compound interest (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹24800 at 15% per year for 2 years (in ₹)?
3. 3.What amount will ₹46100 grow to in 1 year at 12% per year compound interest (in ₹)?
4. 4.A town has 45000 people. The population grows by 12% every year. What will the population be after 2 years?
5. 5.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹57000 at 10% per year for 3 years, compounded every year (in ₹).
7. 7.What amount will ₹24000 grow to in 1 year at 4% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
9. 9.A scooter is worth ₹56200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹35600 at 25% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹13600 at 15% per year for 2 years (in ₹)?
14. 14.What amount will ₹12600 grow to in 1 year at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹57200 at 5% per year for 1 year, compounded every year (in ₹).
16. 16.A scooter is worth ₹49300. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
17. 17.Find the compound interest on ₹3100 at 20% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹46900 grow to in 1 year at 8% per year compound interest (in ₹)?
19. 19.A town has 30000 people. The population grows by 8% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹7100 at 20% per year for 2 years (in ₹)?
21. 21.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
22. 22.What amount will ₹16000 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹36000 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹12800 grow to in 1 year at 4% per year compound interest (in ₹)?
25. 25.What amount will ₹11800 grow to in 1 year at 5% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹10400 at 5% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹17600 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹36600 at 10% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹57200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
32. 32.A town has 33300 people. The population grows by 20% every year. What will the population be after 1 year?
33. 33.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
34. 34.Find the compound interest on ₹8000 at 8% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
36. 36.What amount will ₹3000 grow to in 3 years at 20% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹6400 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹42400 at 25% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹11600 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?

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