Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 164 · 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 ₹47500 at 12% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹54000 at 15% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹54400 at 25% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹32900 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
6. 6.A town has 57500 people. The population grows by 4% every year. What will the population be after 2 years?
7. 7.What amount will ₹50100 grow to in 2 years at 10% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹6800 at 15% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹9800 at 10% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹58000 at 25% per year for 2 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹5900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
12. 12.A town has 2500 people. The population grows by 4% every year. What will the population be after 2 years?
13. 13.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
14. 14.A town has 18800 people. The population grows by 5% 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 ₹13700 at 10% per year for 2 years (in ₹)?
16. 16.What amount will ₹59200 grow to in 3 years at 25% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹25500 at 20% per year for 3 years, compounded every year (in ₹).
18. 18.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹60000 at 12% per year for 2 years, compounded every year (in ₹).
20. 20.A scooter is worth ₹55000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
21. 21.A town has 32700 people. The population grows by 15% every year. What will the population be after 1 year?
22. 22.What amount will ₹44000 grow to in 3 years at 10% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
25. 25.A town has 19600 people. The population grows by 5% every year. What will the population be after 2 years?
26. 26.What amount will ₹54000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹25000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹29200 at 15% per year for 2 years (in ₹)?
29. 29.What amount will ₹24000 grow to in 3 years at 25% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹52100. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
31. 31.Find the compound interest on ₹59600 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.A town has 30500 people. The population grows by 20% every year. What will the population be after 3 years?
33. 33.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
34. 34.A town has 30300 people. The population grows by 4% every year. What will the population be after 1 year?
35. 35.What amount will ₹3600 grow to in 2 years at 20% per year compound interest (in ₹)?
36. 36.What amount will ₹58400 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹19100. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹44600 at 25% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹47500 grow to in 2 years at 12% per year compound interest (in ₹)?

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