Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 225 · 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 amount will ₹46100 grow to in 1 year at 20% per year compound interest (in ₹)?
2. 2.What amount will ₹25400 grow to in 2 years at 10% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹16600 at 10% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹19000 at 10% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
6. 6.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹8300 at 10% per year for 2 years (in ₹)?
8. 8.A town has 2600 people. The population grows by 5% every year. What will the population be after 1 year?
9. 9.A town has 5600 people. The population grows by 15% every year. What will the population be after 1 year?
10. 10.Find the compound interest on ₹44400 at 15% per year for 2 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹40800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
12. 12.What amount will ₹51200 grow to in 3 years at 25% per year compound interest (in ₹)?
13. 13.What amount will ₹38900 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹43500 at 10% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹6500 at 10% per year for 2 years (in ₹)?
16. 16.What amount will ₹50000 grow to in 3 years at 10% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹11500 at 20% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹21200 at 25% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
22. 22.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹45000 at 4% per year for 2 years (in ₹)?
25. 25.A scooter is worth ₹40600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
26. 26.What amount will ₹41000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.What amount will ₹59600 grow to in 2 years at 5% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹39900 at 25% per year for 1 year, compounded every year (in ₹).
29. 29.Find the compound interest on ₹46000 at 20% per year for 3 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹42300 at 20% per year for 2 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹12400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
32. 32.A scooter is worth ₹10000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹16000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
35. 35.A town has 57500 people. The population grows by 4% every year. What will the population be after 2 years?
36. 36.What amount will ₹34400 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹58000 grow to in 1 year at 25% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹34000 at 15% per year for 2 years (in ₹)?
40. 40.What amount will ₹27500 grow to in 2 years at 12% per year compound interest (in ₹)?

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