Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 48 · 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 ₹23300. Its value falls by 20% 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 ₹7200 at 25% per year for 2 years (in ₹)?
3. 3.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
4. 4.A town has 26600 people. The population grows by 8% every year. What will the population be after 1 year?
5. 5.What amount will ₹58600 grow to in 1 year at 15% per year compound interest (in ₹)?
6. 6.A town has 28000 people. The population grows by 5% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.A town has 26800 people. The population grows by 5% every year. What will the population be after 2 years?
9. 9.What is the difference between the compound interest and the simple interest on ₹56200 at 10% per year for 2 years (in ₹)?
10. 10.A town has 37200 people. The population grows by 20% every year. What will the population be after 1 year?
11. 11.What is the difference between the compound interest and the simple interest on ₹12400 at 5% per year for 2 years (in ₹)?
12. 12.What amount will ₹57500 grow to in 2 years at 12% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹8000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
14. 14.Find the compound interest on ₹22000 at 8% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹54700 at 10% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹52500 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.A town has 50900 people. The population grows by 4% every year. What will the population be after 1 year?
18. 18.What amount will ₹19000 grow to in 3 years at 20% per year compound interest (in ₹)?
19. 19.What amount will ₹60000 grow to in 2 years at 12% per year compound interest (in ₹)?
20. 20.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹41600 at 5% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹37600 at 25% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹13200 at 15% per year for 2 years (in ₹)?
24. 24.A town has 35000 people. The population grows by 8% every year. What will the population be after 2 years?
25. 25.What is the difference between the compound interest and the simple interest on ₹25200 at 20% per year for 2 years (in ₹)?
26. 26.What amount will ₹4400 grow to in 1 year at 8% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹5000 at 8% per year for 2 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
29. 29.A town has 24700 people. The population grows by 15% every year. What will the population be after 1 year?
30. 30.What amount will ₹56400 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 ₹10400 at 25% per year for 2 years (in ₹)?
32. 32.What amount will ₹54700 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.What amount will ₹28000 grow to in 3 years at 10% per year compound interest (in ₹)?
34. 34.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
35. 35.A town has 35000 people. The population grows by 12% every year. What will the population be after 2 years?
36. 36.What amount will ₹22400 grow to in 2 years at 25% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹35000 at 8% per year for 2 years, compounded every year (in ₹).
38. 38.A town has 16000 people. The population grows by 20% every year. What will the population be after 3 years?
39. 39.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
40. 40.What amount will ₹18000 grow to in 2 years at 25% per year compound interest (in ₹)?

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