Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 876 · 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 town has 57500 people. The population grows by 8% every year. What will the population be after 2 years?
2. 2.A scooter is worth ₹16900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹50000 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹56000 grow to in 3 years at 10% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹27200 at 25% per year for 3 years, compounded every year (in ₹).
6. 6.What amount will ₹7100 grow to in 1 year at 12% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹33600 at 25% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹11500 grow to in 3 years at 20% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹39800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹38300 at 20% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹27100 at 20% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹38400 at 5% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹56700 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.A scooter is worth ₹43500. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹52900 grow to in 1 year at 8% per year compound interest (in ₹)?
17. 17.A town has 12000 people. The population grows by 15% every year. What will the population be after 2 years?
18. 18.Find the compound interest on ₹34000 at 20% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹45000 grow to in 2 years at 12% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹57900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹11400 at 10% per year for 2 years (in ₹)?
22. 22.What amount will ₹14000 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.What amount will ₹17000 grow to in 1 year at 12% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹32500 at 4% per year for 2 years (in ₹)?
25. 25.What amount will ₹59600 grow to in 2 years at 15% per year compound interest (in ₹)?
26. 26.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹12400 at 5% per year for 1 year, compounded every year (in ₹).
29. 29.A scooter is worth ₹32800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
30. 30.What amount will ₹55200 grow to in 2 years at 20% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹31200 at 15% per year for 2 years (in ₹)?
33. 33.What amount will ₹58300 grow to in 1 year at 25% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹9200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
35. 35.A town has 55000 people. The population grows by 12% every year. What will the population be after 2 years?
36. 36.Find the compound interest on ₹42800 at 10% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹16600 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹28400 at 20% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
40. 40.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?

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