Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 315 · 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 is the difference between the compound interest and the simple interest on ₹6400 at 5% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹24100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹57900 at 12% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹49900 at 4% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
6. 6.A scooter is worth ₹60000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
7. 7.A town has 16000 people. The population grows by 25% every year. What will the population be after 3 years?
8. 8.A town has 3100 people. The population grows by 12% every year. What will the population be after 1 year?
9. 9.What is the difference between the compound interest and the simple interest on ₹57000 at 20% per year for 2 years (in ₹)?
10. 10.What amount will ₹2500 grow to in 2 years at 4% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹28400 at 5% per year for 2 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹12300 at 25% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 22500 people. The population grows by 12% every year. What will the population be after 2 years?
14. 14.What amount will ₹56000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹10600. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹38000 grow to in 2 years at 15% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹33200 at 10% per year for 1 year, compounded every year (in ₹).
18. 18.What amount will ₹34800 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹33500 at 10% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹8700 at 10% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹32000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
22. 22.Find the compound interest on ₹34500 at 20% per year for 3 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹50000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹45400 at 20% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹31200 at 10% per year for 2 years, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹26800 at 5% per year for 2 years (in ₹)?
27. 27.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
28. 28.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
29. 29.A town has 4800 people. The population grows by 25% every year. What will the population be after 3 years?
30. 30.What amount will ₹45000 grow to in 2 years at 4% per year compound interest (in ₹)?
31. 31.A town has 41600 people. The population grows by 5% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹27400 at 10% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹4500 at 10% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹35200 at 4% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹5600 at 20% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹56000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
37. 37.What amount will ₹35100 grow to in 1 year at 15% per year compound interest (in ₹)?
38. 38.Find the compound interest on ₹10800 at 15% per year for 2 years, compounded every year (in ₹).
39. 39.A town has 42500 people. The population grows by 12% every year. What will the population be after 2 years?
40. 40.Find the compound interest on ₹42900 at 10% per year for 2 years, compounded every year (in ₹).

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