Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 860 · 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 ₹21000 at 20% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹13200 at 25% per year for 2 years (in ₹)?
3. 3.What amount will ₹57500 grow to in 3 years at 20% per year compound interest (in ₹)?
4. 4.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
5. 5.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹39200 at 10% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
8. 8.What amount will ₹5200 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹13600. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹19200 grow to in 1 year at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹48700 at 20% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹44000 at 10% per year for 3 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
15. 15.What amount will ₹35200 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.A town has 24000 people. The population grows by 15% 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 ₹55600 at 25% per year for 2 years (in ₹)?
18. 18.What amount will ₹16000 grow to in 2 years at 25% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹20600 at 10% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹12000 at 5% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹57500 at 12% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹59700 at 10% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
24. 24.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹45400 at 20% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
27. 27.Find the compound interest on ₹11400 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹57600 at 8% per year for 1 year, compounded every year (in ₹).
30. 30.A town has 26300 people. The population grows by 20% every year. What will the population be after 2 years?
31. 31.A town has 23500 people. The population grows by 20% every year. What will the population be after 1 year?
32. 32.What amount will ₹41300 grow to in 1 year at 12% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹16300 at 20% per year for 2 years (in ₹)?
34. 34.A town has 10400 people. The population grows by 5% every year. What will the population be after 2 years?
35. 35.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
36. 36.A town has 58800 people. The population grows by 5% every year. What will the population be after 2 years?
37. 37.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹6900 at 20% 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.What amount will ₹25600 grow to in 1 year at 8% per year compound interest (in ₹)?

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