Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 492 · 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 ₹12400 at 10% per year for 2 years (in ₹)?
2. 2.A town has 32500 people. The population grows by 12% every year. What will the population be after 2 years?
3. 3.What is the difference between the compound interest and the simple interest on ₹35200 at 5% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹12000 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹59100 grow to in 1 year at 4% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹51900 at 20% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
8. 8.Find the compound interest on ₹10000 at 8% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹40800 at 5% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹19000 at 20% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹33900 at 20% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹16100 grow to in 1 year at 20% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
15. 15.What amount will ₹45400 grow to in 1 year at 10% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹13300 at 20% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹3700 at 25% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
20. 20.A town has 25000 people. The population grows by 4% every year. What will the population be after 2 years?
21. 21.What amount will ₹36700 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.What amount will ₹28400 grow to in 2 years at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹37200 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹21600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
25. 25.A scooter is worth ₹28500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
26. 26.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.A town has 14400 people. The population grows by 5% every year. What will the population be after 2 years?
28. 28.A scooter is worth ₹5000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
29. 29.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
30. 30.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹43800 at 10% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹20200 at 20% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹35800 at 20% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹12800 at 5% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹41600 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
37. 37.What amount will ₹40100 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹41500 at 12% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹42000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?

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