Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 404 · 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.A town has 26000 people. The population grows by 5% every year. What will the population be after 2 years?
2. 2.What amount will ₹46400 grow to in 3 years at 25% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹58900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹30700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
8. 8.A town has 8800 people. The population grows by 25% every year. What will the population be after 2 years?
9. 9.A scooter is worth ₹17200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
10. 10.A town has 31000 people. The population grows by 10% every year. What will the population be after 1 year?
11. 11.Find the compound interest on ₹28600 at 10% per year for 1 year, compounded every year (in ₹).
12. 12.A scooter is worth ₹33700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹55600 at 12% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
15. 15.What amount will ₹59200 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.What amount will ₹33600 grow to in 2 years at 25% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹17600 at 10% per year for 1 year, compounded every year (in ₹).
18. 18.Find the compound interest on ₹51300 at 10% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹43200 at 5% per year for 2 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹27000 at 20% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹3000 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
24. 24.A town has 5000 people. The population grows by 8% every year. What will the population be after 2 years?
25. 25.A town has 38000 people. The population grows by 10% every year. What will the population be after 3 years?
26. 26.What amount will ₹17500 grow to in 1 year at 5% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹17000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
28. 28.Find the compound interest on ₹6300 at 10% per year for 2 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹2000 at 25% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹15000 at 20% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹17500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹6100 at 10% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹13200 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.A town has 5600 people. The population grows by 4% every year. What will the population be after 1 year?
37. 37.What is the difference between the compound interest and the simple interest on ₹41600 at 5% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
40. 40.A town has 2000 people. The population grows by 10% every year. What will the population be after 3 years?

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