Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 789 · 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 scooter is worth ₹38800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹27500 at 8% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
4. 4.A town has 2500 people. The population grows by 8% every year. What will the population be after 2 years?
5. 5.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.A town has 20800 people. The population grows by 25% every year. What will the population be after 2 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹40900 at 10% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹13400 at 10% per year for 2 years (in ₹)?
9. 9.What amount will ₹15400 grow to in 2 years at 20% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹29500 at 15% per year for 1 year, compounded every year (in ₹).
11. 11.A town has 7500 people. The population grows by 12% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹39500 at 10% per year for 1 year, compounded every year (in ₹).
14. 14.A town has 22100 people. The population grows by 15% every year. What will the population be after 1 year?
15. 15.What is the difference between the compound interest and the simple interest on ₹4000 at 25% per year for 2 years (in ₹)?
16. 16.A town has 31500 people. The population grows by 20% every year. What will the population be after 3 years?
17. 17.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.A town has 47800 people. The population grows by 4% every year. What will the population be after 1 year?
19. 19.Find the compound interest on ₹32200 at 5% per year for 1 year, compounded every year (in ₹).
20. 20.A town has 4500 people. The population grows by 20% every year. What will the population be after 3 years?
21. 21.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
22. 22.A town has 51100 people. The population grows by 5% every year. What will the population be after 1 year?
23. 23.Find the compound interest on ₹9600 at 10% per year for 1 year, compounded every year (in ₹).
24. 24.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
25. 25.Find the compound interest on ₹58400 at 15% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹31600 at 25% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹35200 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹43700 at 10% per year for 1 year, compounded every year (in ₹).
29. 29.A town has 2500 people. The population grows by 4% every year. What will the population be after 2 years?
30. 30.A scooter is worth ₹6400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.A town has 54200 people. The population grows by 8% every year. What will the population be after 1 year?
32. 32.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
33. 33.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹36600. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
35. 35.A town has 5000 people. The population grows by 12% every year. What will the population be after 2 years?
36. 36.What amount will ₹19000 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹6000 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.A town has 55200 people. The population grows by 5% every year. What will the population be after 2 years?
39. 39.What amount will ₹46800 grow to in 2 years at 20% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹56400 at 25% per year for 2 years (in ₹)?

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