Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 869 · 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.Find the compound interest on ₹28900 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.Find the compound interest on ₹23100 at 20% per year for 2 years, compounded every year (in ₹).
3. 3.A scooter is worth ₹18700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
4. 4.Find the compound interest on ₹4800 at 25% per year for 3 years, compounded every year (in ₹).
5. 5.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹24000 at 10% per year for 3 years, compounded every year (in ₹).
8. 8.A scooter is worth ₹55900. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
9. 9.Find the compound interest on ₹30700 at 25% per year for 1 year, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹20000 at 8% per year for 2 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹14400 at 15% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹57600 grow to in 2 years at 5% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹6800 at 5% per year for 2 years, compounded every year (in ₹).
17. 17.A town has 31000 people. The population grows by 15% every year. What will the population be after 1 year?
18. 18.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹18000 at 25% per year for 2 years (in ₹)?
20. 20.A town has 24000 people. The population grows by 5% every year. What will the population be after 3 years?
21. 21.A town has 8900 people. The population grows by 20% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹41000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.What amount will ₹6400 grow to in 2 years at 5% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹46600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
26. 26.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
27. 27.What amount will ₹42000 grow to in 2 years at 25% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹13900 at 10% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹5500. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
30. 30.Find the compound interest on ₹14400 at 25% per year for 2 years, compounded every year (in ₹).
31. 31.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
32. 32.What amount will ₹43700 grow to in 1 year at 4% per year compound interest (in ₹)?
33. 33.What amount will ₹6400 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.A town has 24800 people. The population grows by 5% every year. What will the population be after 2 years?
36. 36.A town has 41500 people. The population grows by 20% every year. What will the population be after 3 years?
37. 37.A town has 20000 people. The population grows by 10% every year. What will the population be after 3 years?
38. 38.A scooter is worth ₹15800. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
39. 39.A town has 47300 people. The population grows by 10% every year. What will the population be after 2 years?
40. 40.A scooter is worth ₹60000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?

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