Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 717 · 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 57500 people. The population grows by 8% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹59300 at 10% per year for 2 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹18500 at 10% per year for 2 years (in ₹)?
5. 5.What amount will ₹22400 grow to in 2 years at 25% per year compound interest (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹6400 at 5% per year for 2 years (in ₹)?
7. 7.A town has 53000 people. The population grows by 5% every year. What will the population be after 1 year?
8. 8.Find the compound interest on ₹4200 at 12% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹7500 at 5% per year for 1 year, compounded every year (in ₹).
10. 10.What amount will ₹9600 grow to in 3 years at 25% per year compound interest (in ₹)?
11. 11.A town has 13300 people. The population grows by 10% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹30000 at 8% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 30000 people. The population grows by 5% every year. What will the population be after 2 years?
14. 14.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹27500 at 4% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹45500 grow to in 1 year at 12% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
18. 18.What amount will ₹57500 grow to in 1 year at 25% per year compound interest (in ₹)?
19. 19.What amount will ₹16100 grow to in 2 years at 10% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹59800 at 20% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹18700 at 15% per year for 1 year, compounded every year (in ₹).
22. 22.Find the compound interest on ₹26500 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.What amount will ₹41500 grow to in 1 year at 15% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹29000 at 15% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹29800 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.What amount will ₹47500 grow to in 2 years at 12% per year compound interest (in ₹)?
28. 28.A scooter is worth ₹50100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.A town has 25000 people. The population grows by 20% every year. What will the population be after 1 year?
30. 30.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
31. 31.A town has 5000 people. The population grows by 4% every year. What will the population be after 2 years?
32. 32.A scooter is worth ₹37600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹1600 at 25% per year for 3 years, compounded every year (in ₹).
34. 34.What amount will ₹43500 grow to in 1 year at 20% per year compound interest (in ₹)?
35. 35.What amount will ₹4800 grow to in 1 year at 5% per year compound interest (in ₹)?
36. 36.What amount will ₹13700 grow to in 1 year at 5% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹14800 at 25% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹8000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
40. 40.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).

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