Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 822 · 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 ₹18700 at 20% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹5000 at 20% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹14400 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.A town has 13500 people. The population grows by 20% every year. What will the population be after 3 years?
5. 5.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹58400 at 15% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹3100 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.A town has 57500 people. The population grows by 4% every year. What will the population be after 2 years?
9. 9.What amount will ₹13200 grow to in 1 year at 25% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹27600 at 10% per year for 2 years (in ₹)?
11. 11.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
12. 12.Find the compound interest on ₹16700 at 20% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹32700 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹32500 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
16. 16.What amount will ₹31200 grow to in 2 years at 5% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹4000 at 15% per year for 2 years, compounded every year (in ₹).
18. 18.What amount will ₹17600 grow to in 3 years at 25% per year compound interest (in ₹)?
19. 19.A town has 16900 people. The population grows by 10% every year. What will the population be after 2 years?
20. 20.Find the compound interest on ₹2500 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 41500 people. The population grows by 15% every year. What will the population be after 1 year?
22. 22.What is the difference between the compound interest and the simple interest on ₹21600 at 5% per year for 2 years (in ₹)?
23. 23.What amount will ₹28800 grow to in 3 years at 25% per year compound interest (in ₹)?
24. 24.What amount will ₹47700 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹28000 at 20% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.What amount will ₹26800 grow to in 2 years at 15% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹37600 at 4% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹26600 at 10% per year for 2 years, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹17200 at 25% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹8900 at 20% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹40000 at 25% per year for 3 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹31200 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹41000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹18400 at 5% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹16000 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.A scooter is worth ₹24000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
39. 39.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹27600 at 5% per year for 2 years (in ₹)?

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