Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 434 · 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 ₹16200 at 10% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
3. 3.What amount will ₹34500 grow to in 1 year at 20% per year compound interest (in ₹)?
4. 4.A town has 11400 people. The population grows by 5% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹46500 at 25% per year for 1 year, compounded every year (in ₹).
6. 6.Find the compound interest on ₹27100 at 12% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹27900 at 10% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹2000 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹26800 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹31600 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹6800 at 10% per year for 2 years (in ₹)?
13. 13.A town has 12800 people. The population grows by 25% every year. What will the population be after 3 years?
14. 14.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
15. 15.A town has 51000 people. The population grows by 10% every year. What will the population be after 3 years?
16. 16.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹58000 at 25% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹58000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹32500 at 10% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹58400 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹10500 at 20% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹22000 at 5% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹13800 at 20% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹14800 at 15% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹12800 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.A town has 34000 people. The population grows by 20% every year. What will the population be after 2 years?
28. 28.Find the compound interest on ₹20000 at 12% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹42500 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹11600 grow to in 1 year at 15% per year compound interest (in ₹)?
31. 31.What amount will ₹44000 grow to in 1 year at 10% per year compound interest (in ₹)?
32. 32.What amount will ₹28000 grow to in 2 years at 25% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹12000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹22800 at 25% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹18800 at 15% per year for 2 years (in ₹)?
36. 36.A town has 39400 people. The population grows by 25% every year. What will the population be after 1 year?
37. 37.Find the compound interest on ₹48000 at 10% per year for 3 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹13900 at 10% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹19800 grow to in 1 year at 4% per year compound interest (in ₹)?

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