Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 431 · 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.Find the compound interest on ₹44500 at 15% per year for 1 year, compounded every year (in ₹).
2. 2.A scooter is worth ₹50100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹6200 at 10% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
5. 5.What amount will ₹34000 grow to in 3 years at 10% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹48000 at 25% per year for 3 years, compounded every year (in ₹).
7. 7.A town has 10700 people. The population grows by 12% every year. What will the population be after 1 year?
8. 8.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹20000 at 25% per year for 2 years (in ₹)?
10. 10.What amount will ₹22500 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹24200 at 12% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹24000 at 10% per year for 3 years, compounded every year (in ₹).
14. 14.A town has 58000 people. The population grows by 10% every year. What will the population be after 3 years?
15. 15.A town has 32500 people. The population grows by 12% every year. What will the population be after 2 years?
16. 16.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
17. 17.A scooter is worth ₹48000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
18. 18.Find the compound interest on ₹40300 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹55600 at 25% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹7600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
22. 22.A town has 52500 people. The population grows by 20% every year. What will the population be after 1 year?
23. 23.Find the compound interest on ₹12000 at 10% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹20500 at 20% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹16900 at 8% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹29300 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.What amount will ₹52700 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹53400 at 10% per year for 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹49600 at 15% per year for 2 years (in ₹)?
30. 30.What amount will ₹13200 grow to in 2 years at 15% per year compound interest (in ₹)?
31. 31.What amount will ₹17500 grow to in 2 years at 8% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹16400 at 25% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹3600 at 5% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹27500 at 20% per year for 3 years, compounded every year (in ₹).
35. 35.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
36. 36.A town has 3000 people. The population grows by 10% every year. What will the population be after 3 years?
37. 37.What amount will ₹18000 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
40. 40.A town has 37000 people. The population grows by 15% every year. What will the population be after 1 year?

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