Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 945 · 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 scooter is worth ₹48000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
2. 2.A scooter is worth ₹17000. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
3. 3.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹20500 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 10000 people. The population grows by 8% every year. What will the population be after 2 years?
6. 6.A town has 19600 people. The population grows by 5% every year. What will the population be after 2 years?
7. 7.What amount will ₹2800 grow to in 2 years at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹28500 at 20% per year for 3 years, compounded every year (in ₹).
10. 10.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.What amount will ₹12300 grow to in 1 year at 8% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹31500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹55100 at 20% per year for 1 year, compounded every year (in ₹).
16. 16.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
17. 17.What amount will ₹45500 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹7500 at 12% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹22500 at 8% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹4400 at 5% per year for 2 years, compounded every year (in ₹).
21. 21.A town has 28400 people. The population grows by 5% every year. What will the population be after 2 years?
22. 22.Find the compound interest on ₹32000 at 25% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹53500 at 20% per year for 3 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹56000 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹52000 at 25% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹3200 at 5% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹36000 at 5% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹30000 at 5% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹19800 at 12% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹58100 at 8% per year for 1 year, compounded every year (in ₹).
32. 32.A town has 28500 people. The population grows by 20% every year. What will the population be after 2 years?
33. 33.What amount will ₹18000 grow to in 2 years at 5% per year compound interest (in ₹)?
34. 34.A town has 10600 people. The population grows by 15% every year. What will the population be after 1 year?
35. 35.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹11600 at 15% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹55500 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
39. 39.What amount will ₹44400 grow to in 2 years at 25% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).

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