Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 305 · 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 ₹25200 grow to in 2 years at 5% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹57500. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
3. 3.What amount will ₹33600 grow to in 3 years at 25% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹52200 at 10% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹7500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹42400 grow to in 2 years at 5% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹33200 at 25% per year for 1 year, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
9. 9.What amount will ₹26400 grow to in 2 years at 15% per year compound interest (in ₹)?
10. 10.A town has 51500 people. The population grows by 10% every year. What will the population be after 1 year?
11. 11.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
12. 12.What amount will ₹26800 grow to in 1 year at 25% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹47500 at 5% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹4200 at 20% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹48600 at 10% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹48000 grow to in 3 years at 20% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹25000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
19. 19.Find the compound interest on ₹29300 at 15% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹27500 at 8% per year for 2 years, compounded every year (in ₹).
21. 21.What amount will ₹44100 grow to in 1 year at 10% per year compound interest (in ₹)?
22. 22.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
23. 23.A town has 37500 people. The population grows by 4% every year. What will the population be after 2 years?
24. 24.A scooter is worth ₹51000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹18800 at 25% per year for 2 years, compounded every year (in ₹).
26. 26.Find the compound interest on ₹55000 at 10% per year for 3 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹58800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
28. 28.A scooter is worth ₹6800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹13900 grow to in 1 year at 5% per year compound interest (in ₹)?
30. 30.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
31. 31.A town has 54000 people. The population grows by 8% every year. What will the population be after 1 year?
32. 32.What is the difference between the compound interest and the simple interest on ₹43200 at 10% per year for 2 years (in ₹)?
33. 33.A town has 56800 people. The population grows by 5% every year. What will the population be after 2 years?
34. 34.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
35. 35.What amount will ₹28000 grow to in 3 years at 10% per year compound interest (in ₹)?
36. 36.What amount will ₹25200 grow to in 1 year at 4% per year compound interest (in ₹)?
37. 37.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹10000 at 15% per year for 2 years (in ₹)?
39. 39.What amount will ₹45300 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹2200 at 10% per year for 1 year, compounded every year (in ₹).

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