Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 447 · 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 ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
2. 2.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹39500 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.A town has 59200 people. The population grows by 5% every year. What will the population be after 2 years?
5. 5.What amount will ₹53400 grow to in 2 years at 10% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹35200 at 15% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹35000 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹18300 at 15% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹5000 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹42500 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹9300 at 20% per year for 2 years (in ₹)?
12. 12.What amount will ₹41200 grow to in 2 years at 25% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹51200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
14. 14.A scooter is worth ₹5900. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
15. 15.Find the compound interest on ₹10400 at 25% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹5200 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹9600 at 25% per year for 2 years (in ₹)?
18. 18.A town has 29400 people. The population grows by 8% every year. What will the population be after 1 year?
19. 19.What amount will ₹59400 grow to in 1 year at 5% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹58800 at 5% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹4800 at 15% per year for 2 years (in ₹)?
22. 22.A town has 5400 people. The population grows by 12% every year. What will the population be after 1 year?
23. 23.A town has 53900 people. The population grows by 5% every year. What will the population be after 1 year?
24. 24.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
25. 25.What amount will ₹19000 grow to in 3 years at 10% per year compound interest (in ₹)?
26. 26.A town has 18000 people. The population grows by 10% every year. What will the population be after 3 years?
27. 27.A town has 33900 people. The population grows by 8% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹14800 at 4% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹14600 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
31. 31.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
32. 32.What amount will ₹36000 grow to in 2 years at 15% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹8400 at 5% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹14300 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹60000 at 8% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹39200 at 25% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹50400 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹50000 grow to in 2 years at 25% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹24400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?

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