Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 929 · 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 29400 people. The population grows by 5% every year. What will the population be after 1 year?
2. 2.Find the compound interest on ₹56000 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.What amount will ₹9000 grow to in 3 years at 10% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹25700 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹27500 at 20% per year for 3 years, compounded every year (in ₹).
6. 6.What amount will ₹38900 grow to in 1 year at 12% per year compound interest (in ₹)?
7. 7.A town has 29600 people. The population grows by 4% every year. What will the population be after 1 year?
8. 8.What is the difference between the compound interest and the simple interest on ₹2800 at 15% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹16000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹52500 at 12% per year for 2 years (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
12. 12.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
13. 13.A town has 12400 people. The population grows by 25% every year. What will the population be after 2 years?
14. 14.What amount will ₹43200 grow to in 2 years at 15% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹35000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
16. 16.A town has 14400 people. The population grows by 25% every year. What will the population be after 3 years?
17. 17.A town has 55400 people. The population grows by 5% every year. What will the population be after 1 year?
18. 18.Find the compound interest on ₹13000 at 10% per year for 3 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹36100 at 10% per year for 2 years (in ₹)?
20. 20.What amount will ₹14800 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹53000 at 10% per year for 3 years, compounded every year (in ₹).
22. 22.A town has 26400 people. The population grows by 10% every year. What will the population be after 2 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹25600 at 5% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹50400 at 15% per year for 2 years (in ₹)?
26. 26.What amount will ₹19300 grow to in 1 year at 5% per year compound interest (in ₹)?
27. 27.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
28. 28.A town has 29600 people. The population grows by 15% every year. What will the population be after 2 years?
29. 29.What is the difference between the compound interest and the simple interest on ₹18500 at 10% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹40700 at 20% per year for 2 years (in ₹)?
31. 31.A scooter is worth ₹5000. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹10400 at 15% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹51200 at 5% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹17200 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹7900 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹6000 at 15% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹40000 at 5% per year for 2 years, compounded every year (in ₹).

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