Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 507 · 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 ₹49600 at 15% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹17500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹27400 at 10% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹20800 at 5% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹25100 at 25% per year for 1 year, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹3200 at 20% per year for 1 year, compounded every year (in ₹).
8. 8.A town has 29000 people. The population grows by 8% every year. What will the population be after 1 year?
9. 9.Find the compound interest on ₹45000 at 8% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 50000 people. The population grows by 25% every year. What will the population be after 2 years?
11. 11.A scooter is worth ₹18300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
12. 12.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹47600. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
14. 14.Find the compound interest on ₹52600 at 15% per year for 1 year, compounded every year (in ₹).
15. 15.What amount will ₹54900 grow to in 2 years at 20% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹48800 at 15% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹53700 at 20% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹32100 at 10% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹43600 grow to in 2 years at 15% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹17000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.A town has 25000 people. The population grows by 8% every year. What will the population be after 2 years?
22. 22.A scooter is worth ₹44000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
23. 23.Find the compound interest on ₹45200 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹12300 grow to in 1 year at 10% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹31400 at 20% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹43200 at 5% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹35600 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹33600 at 15% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹2400 at 10% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹2800 at 15% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
33. 33.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹31500 at 20% per year for 1 year, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹50000 at 8% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹8400 at 25% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
39. 39.A scooter is worth ₹34200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
40. 40.A town has 53200 people. The population grows by 5% every year. What will the population be after 2 years?

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