Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 319 · 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 28000 people. The population grows by 20% every year. What will the population be after 3 years?
2. 2.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹48000 at 10% per year for 3 years, compounded every year (in ₹).
4. 4.A town has 9500 people. The population grows by 4% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹22700 at 12% per year for 1 year, compounded every year (in ₹).
6. 6.A town has 2500 people. The population grows by 4% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
9. 9.What amount will ₹22800 grow to in 2 years at 25% per year compound interest (in ₹)?
10. 10.A scooter is worth ₹36200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
11. 11.A scooter is worth ₹13300. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
12. 12.Find the compound interest on ₹35300 at 8% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹7600 grow to in 2 years at 25% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹50000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
15. 15.A scooter is worth ₹52800. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹48600 at 10% per year for 2 years (in ₹)?
18. 18.A town has 23000 people. The population grows by 20% every year. What will the population be after 3 years?
19. 19.What amount will ₹48900 grow to in 1 year at 20% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹16800 at 20% per year for 2 years, compounded every year (in ₹).
21. 21.What amount will ₹16500 grow to in 3 years at 20% per year compound interest (in ₹)?
22. 22.What amount will ₹54300 grow to in 2 years at 20% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹45600 at 5% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹23900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
26. 26.What amount will ₹17000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹45400 at 5% per year for 1 year, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹7900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
30. 30.What amount will ₹29200 grow to in 2 years at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹37500 at 4% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹52800 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹19200 at 15% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹16100 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.A scooter is worth ₹29500. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
37. 37.Find the compound interest on ₹58000 at 15% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹17900 grow to in 1 year at 12% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹8000 at 25% per year for 2 years (in ₹)?

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