Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 261 · 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 40000 people. The population grows by 5% every year. What will the population be after 3 years?
2. 2.What amount will ₹5500 grow to in 2 years at 20% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹2500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
4. 4.A town has 24800 people. The population grows by 20% every year. What will the population be after 2 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹58000 at 5% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹31600 at 15% per year for 2 years (in ₹)?
8. 8.What amount will ₹9600 grow to in 3 years at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹26000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹60000 at 4% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹55300 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.A town has 50500 people. The population grows by 5% every year. What will the population be after 1 year?
13. 13.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹34000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹6000 at 20% per year for 1 year, compounded every year (in ₹).
16. 16.A scooter is worth ₹48400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
17. 17.A scooter is worth ₹35000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
18. 18.A scooter is worth ₹22500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
19. 19.A scooter is worth ₹14700. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
20. 20.What amount will ₹35200 grow to in 3 years at 25% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
22. 22.What amount will ₹27900 grow to in 1 year at 25% per year compound interest (in ₹)?
23. 23.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹37000 at 10% per year for 3 years, compounded every year (in ₹).
26. 26.A town has 7500 people. The population grows by 12% every year. What will the population be after 2 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹29000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹54000 at 20% per year for 2 years (in ₹)?
30. 30.What amount will ₹4700 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹52100 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹42600 at 20% per year for 2 years (in ₹)?
33. 33.A town has 26800 people. The population grows by 15% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹46000 at 15% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹39300 grow to in 1 year at 8% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹24000 at 25% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹12500 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
40. 40.What amount will ₹35600 grow to in 2 years at 20% per year compound interest (in ₹)?

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