Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 321 · 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 ₹59500 at 20% per year for 2 years (in ₹)?
2. 2.What amount will ₹45800 grow to in 1 year at 5% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹2800 at 5% per year for 2 years (in ₹)?
4. 4.A scooter is worth ₹51200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
5. 5.A scooter is worth ₹1600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
6. 6.A town has 39400 people. The population grows by 10% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹2500 at 12% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹6400 at 5% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹12000 at 15% per year for 2 years (in ₹)?
10. 10.What amount will ₹40000 grow to in 1 year at 10% per year compound interest (in ₹)?
11. 11.What amount will ₹12200 grow to in 1 year at 5% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹56600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.What amount will ₹24000 grow to in 3 years at 20% per year compound interest (in ₹)?
15. 15.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?
16. 16.A town has 38000 people. The population grows by 20% every year. What will the population be after 3 years?
17. 17.Find the compound interest on ₹20400 at 5% per year for 2 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹9100. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
19. 19.Find the compound interest on ₹54300 at 10% per year for 2 years, compounded every year (in ₹).
20. 20.What amount will ₹9100 grow to in 1 year at 15% per year compound interest (in ₹)?
21. 21.What amount will ₹56000 grow to in 3 years at 10% per year compound interest (in ₹)?
22. 22.A scooter is worth ₹2500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
23. 23.Find the compound interest on ₹40000 at 10% per year for 3 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹46000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
25. 25.What amount will ₹35600 grow to in 2 years at 25% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹23600 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹4500 at 20% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹38400 at 25% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹53600 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹18000 at 25% per year for 2 years (in ₹)?
31. 31.What amount will ₹3200 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.What amount will ₹49800 grow to in 2 years at 20% per year compound interest (in ₹)?
33. 33.What amount will ₹20200 grow to in 2 years at 20% per year compound interest (in ₹)?
34. 34.A town has 2000 people. The population grows by 10% every year. What will the population be after 3 years?
35. 35.Find the compound interest on ₹54700 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹52400 at 20% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹15000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (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.What amount will ₹10300 grow to in 1 year at 15% per year compound interest (in ₹)?

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