Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 732 · 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.Find the compound interest on ₹17500 at 25% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹29500 grow to in 1 year at 25% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹27500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹7600 grow to in 1 year at 20% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹33600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
8. 8.Find the compound interest on ₹36700 at 10% per year for 1 year, compounded every year (in ₹).
9. 9.A town has 34800 people. The population grows by 25% every year. What will the population be after 2 years?
10. 10.What amount will ₹13700 grow to in 1 year at 15% per year compound interest (in ₹)?
11. 11.What amount will ₹47300 grow to in 1 year at 8% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
13. 13.A town has 44700 people. The population grows by 10% every year. What will the population be after 1 year?
14. 14.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹18200 at 10% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹48500 at 20% per year for 3 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹52500 at 10% per year for 2 years (in ₹)?
19. 19.A town has 11900 people. The population grows by 10% every year. What will the population be after 1 year?
20. 20.What amount will ₹11000 grow to in 1 year at 20% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹28700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
22. 22.What amount will ₹30400 grow to in 1 year at 10% per year compound interest (in ₹)?
23. 23.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
24. 24.What amount will ₹38100 grow to in 1 year at 4% per year compound interest (in ₹)?
25. 25.What amount will ₹20800 grow to in 3 years at 25% per year compound interest (in ₹)?
26. 26.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹10600 at 12% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹57600 grow to in 2 years at 15% per year compound interest (in ₹)?
29. 29.What amount will ₹7000 grow to in 3 years at 10% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹49000 at 20% per year for 3 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹58400 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹32000 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.A town has 14000 people. The population grows by 25% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
35. 35.What amount will ₹21700 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹4300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹4800 at 25% per year for 2 years (in ₹)?
38. 38.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹18800 at 15% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹26800 at 5% per year for 2 years (in ₹)?

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