Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 993 · 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 scooter is worth ₹25500. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
2. 2.Find the compound interest on ₹12500 at 4% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 11200 people. The population grows by 25% every year. What will the population be after 2 years?
4. 4.Find the compound interest on ₹29100 at 5% per year for 1 year, compounded every year (in ₹).
5. 5.A town has 27600 people. The population grows by 15% every year. What will the population be after 1 year?
6. 6.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹20000 at 25% per year for 2 years (in ₹)?
8. 8.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹29600 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹21500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
11. 11.Find the compound interest on ₹3800 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
13. 13.A town has 12100 people. The population grows by 10% every year. What will the population be after 1 year?
14. 14.Find the compound interest on ₹26300 at 5% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹55400 at 20% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹57500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
19. 19.What amount will ₹48000 grow to in 1 year at 8% per year compound interest (in ₹)?
20. 20.What amount will ₹37500 grow to in 1 year at 10% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹42700 at 8% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹22300 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
24. 24.What amount will ₹6600 grow to in 1 year at 4% per year compound interest (in ₹)?
25. 25.A town has 7900 people. The population grows by 5% every year. What will the population be after 1 year?
26. 26.What is the difference between the compound interest and the simple interest on ₹31600 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹33200 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.A town has 20000 people. The population grows by 10% every year. What will the population be after 3 years?
29. 29.What is the difference between the compound interest and the simple interest on ₹18800 at 25% per year for 2 years (in ₹)?
30. 30.A town has 43200 people. The population grows by 15% every year. What will the population be after 2 years?
31. 31.What amount will ₹11300 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
35. 35.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
36. 36.What amount will ₹51900 grow to in 1 year at 10% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹26000 at 5% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹12000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
39. 39.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹26100 grow to in 1 year at 25% per year compound interest (in ₹)?

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