Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 771 · 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 ₹5200 at 15% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹19600 at 5% per year for 2 years (in ₹)?
3. 3.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹50000 grow to in 2 years at 4% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹58800 at 5% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹57300. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
11. 11.Find the compound interest on ₹7500 at 8% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
13. 13.What amount will ₹36000 grow to in 2 years at 15% per year compound interest (in ₹)?
14. 14.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹7700 at 15% per year for 1 year, compounded every year (in ₹).
17. 17.A town has 52500 people. The population grows by 4% every year. What will the population be after 2 years?
18. 18.What amount will ₹6800 grow to in 2 years at 15% per year compound interest (in ₹)?
19. 19.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
20. 20.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
21. 21.What amount will ₹38000 grow to in 3 years at 20% per year compound interest (in ₹)?
22. 22.A town has 35600 people. The population grows by 5% every year. What will the population be after 2 years?
23. 23.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹20900 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹42500 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.A scooter is worth ₹3600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
28. 28.What amount will ₹55200 grow to in 2 years at 25% per year compound interest (in ₹)?
29. 29.What amount will ₹17100 grow to in 1 year at 12% per year compound interest (in ₹)?
30. 30.A town has 6000 people. The population grows by 10% every year. What will the population be after 3 years?
31. 31.What amount will ₹60000 grow to in 2 years at 8% per year compound interest (in ₹)?
32. 32.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
34. 34.What amount will ₹32600 grow to in 1 year at 10% per year compound interest (in ₹)?
35. 35.A scooter is worth ₹20800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
36. 36.A town has 14000 people. The population grows by 10% every year. What will the population be after 2 years?
37. 37.A scooter is worth ₹52500. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
39. 39.A scooter is worth ₹12500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
40. 40.A scooter is worth ₹7500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?

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