Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 146 · 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 ₹41700 at 20% per year for 2 years (in ₹)?
2. 2.What amount will ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
3. 3.A town has 8100 people. The population grows by 5% every year. What will the population be after 1 year?
4. 4.Find the compound interest on ₹42800 at 5% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹18400 at 20% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹47800 at 10% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹13200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
8. 8.Find the compound interest on ₹50200 at 10% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹45600 at 25% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹46800 at 25% per year for 2 years (in ₹)?
12. 12.A town has 35900 people. The population grows by 8% every year. What will the population be after 1 year?
13. 13.A scooter is worth ₹29000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
14. 14.A town has 41000 people. The population grows by 4% every year. What will the population be after 1 year?
15. 15.What amount will ₹11300 grow to in 1 year at 4% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹6700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
17. 17.Find the compound interest on ₹59600 at 5% per year for 2 years, compounded every year (in ₹).
18. 18.A town has 43300 people. The population grows by 15% every year. What will the population be after 1 year?
19. 19.What is the difference between the compound interest and the simple interest on ₹8800 at 15% per year for 2 years (in ₹)?
20. 20.A scooter is worth ₹55000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹33700 at 10% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹56600 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.A town has 57500 people. The population grows by 8% every year. What will the population be after 2 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹27400 at 20% per year for 2 years (in ₹)?
25. 25.What amount will ₹21000 grow to in 3 years at 10% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.What amount will ₹51500 grow to in 2 years at 10% per year compound interest (in ₹)?
28. 28.A town has 10100 people. The population grows by 4% every year. What will the population be after 1 year?
29. 29.Find the compound interest on ₹18800 at 12% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹35200 at 15% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹60000 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹7900 grow to in 1 year at 8% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹6400 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
36. 36.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.What amount will ₹27200 grow to in 2 years at 10% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹22000 at 5% per year for 2 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹36500. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
40. 40.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).

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