Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 617 · 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 ₹50200 at 20% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹55200. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹46000 at 25% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 5200 people. The population grows by 25% every year. What will the population be after 2 years?
5. 5.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
6. 6.What amount will ₹11200 grow to in 3 years at 25% per year compound interest (in ₹)?
7. 7.What amount will ₹17200 grow to in 1 year at 10% per year compound interest (in ₹)?
8. 8.A scooter is worth ₹56300. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
9. 9.What amount will ₹37700 grow to in 1 year at 25% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹7500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
12. 12.Find the compound interest on ₹44000 at 10% per year for 3 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹49600 at 25% per year for 2 years, compounded every year (in ₹).
14. 14.A town has 48000 people. The population grows by 15% every year. What will the population be after 3 years?
15. 15.What amount will ₹17500 grow to in 2 years at 4% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
17. 17.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹52200. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
20. 20.What amount will ₹43600 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹39800 at 25% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹55600 at 15% per year for 2 years (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹24400 at 5% per year for 2 years (in ₹)?
24. 24.What amount will ₹56100 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.What amount will ₹2700 grow to in 1 year at 20% per year compound interest (in ₹)?
26. 26.A town has 37500 people. The population grows by 8% every year. What will the population be after 2 years?
27. 27.A town has 20100 people. The population grows by 10% every year. What will the population be after 2 years?
28. 28.What amount will ₹9900 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.A town has 45000 people. The population grows by 8% every year. What will the population be after 2 years?
30. 30.A town has 52300 people. The population grows by 20% every year. What will the population be after 2 years?
31. 31.What is the difference between the compound interest and the simple interest on ₹53300 at 10% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹29300 at 10% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹56400 at 5% per year for 2 years (in ₹)?
34. 34.A scooter is worth ₹57600. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
35. 35.Find the compound interest on ₹37500 at 4% per year for 2 years, compounded every year (in ₹).
36. 36.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹34400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹42100 at 8% per year for 1 year, compounded every year (in ₹).
40. 40.A town has 16300 people. The population grows by 4% every year. What will the population be after 1 year?

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