Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 161 · 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.What is the difference between the compound interest and the simple interest on ₹14000 at 20% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹18700 at 10% per year for 1 year, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹17800 at 10% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹41200 at 5% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
6. 6.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹39100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
9. 9.A scooter is worth ₹50000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹9600 at 15% per year for 2 years (in ₹)?
11. 11.A town has 60000 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.Find the compound interest on ₹59600 at 8% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹15700 at 20% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹11200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹23600 at 5% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹46100 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹6100 at 20% per year for 2 years (in ₹)?
18. 18.What amount will ₹59200 grow to in 3 years at 25% per year compound interest (in ₹)?
19. 19.What amount will ₹49900 grow to in 1 year at 10% per year compound interest (in ₹)?
20. 20.What amount will ₹27000 grow to in 3 years at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹23100 at 5% per year for 1 year, compounded every year (in ₹).
22. 22.What amount will ₹50500 grow to in 1 year at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹35300 at 5% per year for 1 year, compounded every year (in ₹).
24. 24.Find the compound interest on ₹60000 at 25% per year for 2 years, compounded every year (in ₹).
25. 25.A town has 55000 people. The population grows by 8% every year. What will the population be after 2 years?
26. 26.What amount will ₹59000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.A town has 43200 people. The population grows by 25% every year. What will the population be after 3 years?
28. 28.Find the compound interest on ₹56600 at 20% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹58400 grow to in 2 years at 25% per year compound interest (in ₹)?
30. 30.What amount will ₹53600 grow to in 2 years at 25% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹36000 at 5% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹51200 at 15% per year for 2 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹47500 at 12% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹35000 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.A scooter is worth ₹48700. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹29600 at 25% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹57200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
40. 40.A town has 27800 people. The population grows by 12% every year. What will the population be after 1 year?

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