Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 766 · 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 ₹10000 at 4% per year for 2 years (in ₹)?
2. 2.A town has 9000 people. The population grows by 25% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹33000 at 15% per year for 1 year, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹36000 at 25% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹30200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹40500 at 10% per year for 2 years (in ₹)?
10. 10.What amount will ₹34900 grow to in 1 year at 12% per year compound interest (in ₹)?
11. 11.A town has 57200 people. The population grows by 25% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹7600 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹2400 at 5% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹10800 at 20% per year for 1 year, compounded every year (in ₹).
17. 17.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
18. 18.Find the compound interest on ₹38500 at 5% per year for 1 year, compounded every year (in ₹).
19. 19.Find the compound interest on ₹6400 at 25% per year for 3 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹44400 at 10% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹50400. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
24. 24.A town has 15300 people. The population grows by 15% every year. What will the population be after 1 year?
25. 25.What amount will ₹9200 grow to in 2 years at 25% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹15800 at 15% per year for 1 year, compounded every year (in ₹).
27. 27.A town has 50000 people. The population grows by 4% every year. What will the population be after 2 years?
28. 28.What amount will ₹9100 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹23200 at 15% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹7700. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹51300 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.A town has 22500 people. The population grows by 8% every year. What will the population be after 2 years?
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.A scooter is worth ₹30100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹55200 at 5% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹59200 at 5% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.What amount will ₹26400 grow to in 2 years at 5% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹3900 at 15% per year for 1 year, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹29200 at 15% per year for 2 years (in ₹)?

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