Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 457 · 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 ₹22500 at 8% per year for 2 years (in ₹)?
2. 2.What amount will ₹54900 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹10100 at 10% per year for 2 years, compounded every year (in ₹).
4. 4.What amount will ₹18700 grow to in 1 year at 25% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹20500 at 20% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹27100 at 20% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹22500 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹37200 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹41200 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
13. 13.What amount will ₹1600 grow to in 3 years at 25% per year compound interest (in ₹)?
14. 14.What amount will ₹40000 grow to in 3 years at 25% per year compound interest (in ₹)?
15. 15.What amount will ₹7700 grow to in 1 year at 8% per year compound interest (in ₹)?
16. 16.What amount will ₹40800 grow to in 1 year at 8% per year compound interest (in ₹)?
17. 17.A town has 49400 people. The population grows by 10% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹26800 at 15% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹20000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
20. 20.What amount will ₹57000 grow to in 3 years at 10% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹33600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹10000 at 8% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
24. 24.A town has 45000 people. The population grows by 4% every year. What will the population be after 2 years?
25. 25.A town has 9000 people. The population grows by 10% every year. What will the population be after 3 years?
26. 26.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.A town has 18000 people. The population grows by 4% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹14400 at 25% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹52000 grow to in 1 year at 25% per year compound interest (in ₹)?
30. 30.What amount will ₹40800 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
32. 32.What amount will ₹45900 grow to in 1 year at 12% per year compound interest (in ₹)?
33. 33.What amount will ₹8300 grow to in 1 year at 12% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
35. 35.A scooter is worth ₹39000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
36. 36.What amount will ₹12500 grow to in 2 years at 8% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹43800 at 20% per year for 1 year, compounded every year (in ₹).
38. 38.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
39. 39.What amount will ₹10000 grow to in 3 years at 10% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?

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