Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 555 · 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 ₹27200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
2. 2.What amount will ₹34500 grow to in 3 years at 20% per year compound interest (in ₹)?
3. 3.A scooter is worth ₹7500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
4. 4.Find the compound interest on ₹52500 at 4% per year for 2 years, compounded every year (in ₹).
5. 5.Find the compound interest on ₹30400 at 25% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹23000 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹23600 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹23200 at 15% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹57400 grow to in 1 year at 12% per year compound interest (in ₹)?
11. 11.A town has 14900 people. The population grows by 5% every year. What will the population be after 1 year?
12. 12.Find the compound interest on ₹30800 at 15% per year for 2 years, compounded every year (in ₹).
13. 13.What amount will ₹3200 grow to in 2 years at 25% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹41000 at 10% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹18800 at 5% per year for 2 years (in ₹)?
17. 17.A town has 42500 people. The population grows by 8% every year. What will the population be after 2 years?
18. 18.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
19. 19.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
20. 20.Find the compound interest on ₹26200 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.A town has 21000 people. The population grows by 10% 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 ₹4800 at 5% per year for 2 years (in ₹)?
23. 23.What amount will ₹47200 grow to in 2 years at 25% per year compound interest (in ₹)?
24. 24.A scooter is worth ₹2800. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
26. 26.A scooter is worth ₹51800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
27. 27.What amount will ₹50000 grow to in 2 years at 25% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹51600 at 15% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹11200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹11800 at 10% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹31000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
33. 33.What amount will ₹58100 grow to in 1 year at 8% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹2500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
35. 35.Find the compound interest on ₹12000 at 5% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
37. 37.What amount will ₹11500 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹14700 at 20% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹56000. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
40. 40.Find the compound interest on ₹27500 at 8% per year for 2 years, compounded every year (in ₹).

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