Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 713 · 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 ₹45000 grow to in 2 years at 8% per year compound interest (in ₹)?
2. 2.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
3. 3.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹19100 at 20% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹44000 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹41000 grow to in 3 years at 10% per year compound interest (in ₹)?
8. 8.What amount will ₹57300 grow to in 1 year at 12% per year compound interest (in ₹)?
9. 9.A town has 39500 people. The population grows by 25% every year. What will the population be after 1 year?
10. 10.What is the difference between the compound interest and the simple interest on ₹2800 at 25% per year for 2 years (in ₹)?
11. 11.A town has 47500 people. The population grows by 12% every year. What will the population be after 2 years?
12. 12.What amount will ₹23300 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹9400 grow to in 1 year at 12% per year compound interest (in ₹)?
14. 14.What amount will ₹7500 grow to in 2 years at 8% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹14800 at 15% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹26600 at 5% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹33600 grow to in 2 years at 15% per year compound interest (in ₹)?
19. 19.A town has 6000 people. The population grows by 25% every year. What will the population be after 2 years?
20. 20.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹33600 at 10% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹2500 grow to in 2 years at 8% per year compound interest (in ₹)?
23. 23.A scooter is worth ₹45200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
24. 24.A town has 29400 people. The population grows by 25% every year. What will the population be after 1 year?
25. 25.A town has 4800 people. The population grows by 25% every year. What will the population be after 3 years?
26. 26.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
27. 27.A town has 16200 people. The population grows by 8% every year. What will the population be after 1 year?
28. 28.A scooter is worth ₹20000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
29. 29.What amount will ₹24200 grow to in 1 year at 20% per year compound interest (in ₹)?
30. 30.What amount will ₹31000 grow to in 3 years at 20% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹46000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹52300 at 15% per year for 1 year, compounded every year (in ₹).
34. 34.What amount will ₹60000 grow to in 3 years at 10% per year compound interest (in ₹)?
35. 35.A town has 23200 people. The population grows by 25% every year. What will the population be after 1 year?
36. 36.What amount will ₹8000 grow to in 1 year at 4% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹53200 at 25% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹20400 at 25% per year for 2 years (in ₹)?

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