Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 88 · 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 ₹11500 at 20% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
3. 3.What amount will ₹11200 grow to in 2 years at 5% per year compound interest (in ₹)?
4. 4.What amount will ₹28400 grow to in 2 years at 10% per year compound interest (in ₹)?
5. 5.What amount will ₹20500 grow to in 1 year at 8% per year compound interest (in ₹)?
6. 6.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
7. 7.What amount will ₹51400 grow to in 1 year at 15% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹21600 at 25% per year for 1 year, compounded every year (in ₹).
9. 9.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹12000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
11. 11.What amount will ₹37600 grow to in 1 year at 10% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹56400 at 10% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹52700 at 4% per year for 1 year, compounded every year (in ₹).
14. 14.A town has 50100 people. The population grows by 20% every year. What will the population be after 2 years?
15. 15.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹27500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
17. 17.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹26300 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.A scooter is worth ₹13100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
22. 22.What amount will ₹29900 grow to in 1 year at 25% per year compound interest (in ₹)?
23. 23.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹16800 at 20% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹4900 at 20% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹30000 at 12% per year for 2 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹60000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
28. 28.A scooter is worth ₹19000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
29. 29.A town has 11400 people. The population grows by 10% every year. What will the population be after 1 year?
30. 30.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹32700 at 10% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.What amount will ₹56700 grow to in 1 year at 4% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹30000 at 4% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹4100 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹56800 at 25% per year for 2 years (in ₹)?
38. 38.A town has 21400 people. The population grows by 12% every year. What will the population be after 1 year?
39. 39.What amount will ₹20000 grow to in 2 years at 4% per year compound interest (in ₹)?
40. 40.What amount will ₹20400 grow to in 2 years at 5% per year compound interest (in ₹)?

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