Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 941 · 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 ₹30800 grow to in 2 years at 5% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹26500 at 15% per year for 1 year, compounded every year (in ₹).
3. 3.A scooter is worth ₹12500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹35200 at 25% per year for 2 years (in ₹)?
5. 5.A scooter is worth ₹50000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
6. 6.A scooter is worth ₹37300. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
7. 7.A town has 47600 people. The population grows by 15% every year. What will the population be after 2 years?
8. 8.Find the compound interest on ₹25500 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.Find the compound interest on ₹25600 at 25% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
11. 11.A scooter is worth ₹8000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
12. 12.What amount will ₹35600 grow to in 2 years at 15% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹20000 at 15% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹49800 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹48600 at 10% per year for 2 years (in ₹)?
17. 17.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹45100 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.A scooter is worth ₹2800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹50000 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹16400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
22. 22.Find the compound interest on ₹6000 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.A town has 8000 people. The population grows by 5% every year. What will the population be after 1 year?
24. 24.A town has 10000 people. The population grows by 20% every year. What will the population be after 3 years?
25. 25.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹2500 at 4% per year for 2 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹6800 at 5% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
30. 30.A town has 35200 people. The population grows by 10% every year. What will the population be after 2 years?
31. 31.A town has 22500 people. The population grows by 4% every year. What will the population be after 2 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹52600 at 10% per year for 2 years (in ₹)?
34. 34.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹20800 at 5% per year for 2 years, compounded every year (in ₹).
36. 36.A scooter is worth ₹2400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
37. 37.A scooter is worth ₹27600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
38. 38.What amount will ₹38800 grow to in 1 year at 25% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹44600 at 10% per year for 2 years (in ₹)?
40. 40.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?

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