Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 967 · 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 is the difference between the compound interest and the simple interest on ₹37200 at 20% per year for 2 years (in ₹)?
2. 2.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹43300 at 20% per year for 1 year, compounded every year (in ₹).
4. 4.A scooter is worth ₹35000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
5. 5.A scooter is worth ₹3000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹4000 grow to in 2 years at 25% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹40000 at 25% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹10400 at 5% per year for 2 years, compounded every year (in ₹).
9. 9.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
10. 10.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹19600 at 15% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹7600 at 10% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹21000 at 10% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹19200 at 25% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹22400 at 10% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹52500 grow to in 2 years at 8% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹56000 at 15% per year for 2 years (in ₹)?
20. 20.A town has 31000 people. The population grows by 10% every year. What will the population be after 3 years?
21. 21.What amount will ₹22500 grow to in 2 years at 4% per year compound interest (in ₹)?
22. 22.A town has 13200 people. The population grows by 20% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹19700 at 20% per year for 2 years (in ₹)?
24. 24.A town has 8500 people. The population grows by 20% every year. What will the population be after 3 years?
25. 25.Find the compound interest on ₹18500 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
27. 27.A town has 10000 people. The population grows by 4% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹7000 at 10% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.A scooter is worth ₹14400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
31. 31.What amount will ₹36800 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
33. 33.A town has 49600 people. The population grows by 25% every year. What will the population be after 3 years?
34. 34.A town has 4800 people. The population grows by 10% every year. What will the population be after 2 years?
35. 35.What amount will ₹41300 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.What amount will ₹26800 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.A town has 35600 people. The population grows by 5% every year. What will the population be after 2 years?
38. 38.What amount will ₹6000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹53600 at 15% per year for 2 years (in ₹)?

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