Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 665 · 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 ₹34800 at 5% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹55200 at 15% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.A town has 2900 people. The population grows by 20% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
7. 7.Find the compound interest on ₹32900 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹3000 at 20% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹26600 at 10% per year for 2 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹18800 at 25% per year for 2 years (in ₹)?
12. 12.A scooter is worth ₹39000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
13. 13.A town has 4900 people. The population grows by 10% every year. What will the population be after 1 year?
14. 14.Find the compound interest on ₹19400 at 10% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹16000 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.A scooter is worth ₹7500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
17. 17.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹2600 at 8% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹43600. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹2800 at 20% per year for 2 years (in ₹)?
21. 21.A town has 35500 people. The population grows by 10% every year. What will the population be after 1 year?
22. 22.A town has 43000 people. The population grows by 15% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹30400 at 25% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹46400 at 5% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
27. 27.A scooter is worth ₹14400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
28. 28.A scooter is worth ₹22400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
29. 29.What amount will ₹54800 grow to in 2 years at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹50000 grow to in 2 years at 12% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
32. 32.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹53900 at 20% per year for 2 years (in ₹)?
34. 34.A town has 60000 people. The population grows by 4% every year. What will the population be after 1 year?
35. 35.What amount will ₹22300 grow to in 1 year at 25% per year compound interest (in ₹)?
36. 36.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹46400 at 25% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹6500 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹39600 grow to in 1 year at 12% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).

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