Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 52 · 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 ₹50000 grow to in 2 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹46400 grow to in 2 years at 15% per year compound interest (in ₹)?
3. 3.What amount will ₹46100 grow to in 1 year at 4% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹15600 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.A town has 6500 people. The population grows by 10% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹17500 at 4% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹7300. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
9. 9.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹43400 at 20% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹57200 at 10% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹30200 at 10% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹28700 at 12% per year for 1 year, compounded every year (in ₹).
14. 14.Find the compound interest on ₹57600 at 25% per year for 3 years, compounded every year (in ₹).
15. 15.A scooter is worth ₹8700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
17. 17.What amount will ₹10800 grow to in 2 years at 10% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹56400 at 15% per year for 2 years, compounded every year (in ₹).
19. 19.A town has 28500 people. The population grows by 10% every year. What will the population be after 1 year?
20. 20.What is the difference between the compound interest and the simple interest on ₹12400 at 10% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹20700. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
22. 22.A scooter is worth ₹40200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
23. 23.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
24. 24.What amount will ₹40800 grow to in 1 year at 20% per year compound interest (in ₹)?
25. 25.Find the compound interest on ₹14400 at 25% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹13500 grow to in 1 year at 10% per year compound interest (in ₹)?
27. 27.Find the compound interest on ₹27200 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.What amount will ₹19200 grow to in 2 years at 5% per year compound interest (in ₹)?
29. 29.A town has 16400 people. The population grows by 15% every year. What will the population be after 2 years?
30. 30.What amount will ₹12400 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹33900 grow to in 1 year at 5% per year compound interest (in ₹)?
32. 32.A town has 2700 people. The population grows by 15% every year. What will the population be after 1 year?
33. 33.A town has 45400 people. The population grows by 15% every year. What will the population be after 1 year?
34. 34.Find the compound interest on ₹36800 at 15% per year for 2 years, compounded every year (in ₹).
35. 35.What amount will ₹11000 grow to in 3 years at 10% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹30400 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹25200 at 25% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹38000. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹45200 grow to in 2 years at 5% per year compound interest (in ₹)?

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