Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 948 · 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 ₹44700 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.Find the compound interest on ₹60000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.A scooter is worth ₹57600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
4. 4.Find the compound interest on ₹46400 at 20% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹58400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹28000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.A town has 24000 people. The population grows by 15% every year. What will the population be after 3 years?
8. 8.What is the difference between the compound interest and the simple interest on ₹40600 at 20% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹28000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
11. 11.A town has 28000 people. The population grows by 20% every year. What will the population be after 3 years?
12. 12.A scooter is worth ₹56000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
13. 13.A scooter is worth ₹33500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
14. 14.What amount will ₹25900 grow to in 2 years at 20% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹23300 at 10% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹40000 at 8% per year for 2 years (in ₹)?
18. 18.What amount will ₹2900 grow to in 1 year at 25% per year compound interest (in ₹)?
19. 19.A town has 14400 people. The population grows by 25% every year. What will the population be after 2 years?
20. 20.A town has 5500 people. The population grows by 20% every year. What will the population be after 3 years?
21. 21.A town has 32000 people. The population grows by 25% every year. What will the population be after 3 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹34400 at 15% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹56500 at 20% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹10000 grow to in 2 years at 15% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹5100 at 10% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
27. 27.A town has 5200 people. The population grows by 25% every year. What will the population be after 2 years?
28. 28.What amount will ₹3400 grow to in 2 years at 20% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹16000 at 20% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹29600 at 25% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹37800 at 10% per year for 2 years (in ₹)?
32. 32.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
33. 33.A town has 31600 people. The population grows by 20% every year. What will the population be after 2 years?
34. 34.What amount will ₹22500 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹23000 at 10% per year for 2 years (in ₹)?
37. 37.A scooter is worth ₹49800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹11500 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹55700 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?

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