Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 498 · 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 ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
2. 2.What amount will ₹32900 grow to in 1 year at 4% per year compound interest (in ₹)?
3. 3.What amount will ₹51600 grow to in 2 years at 15% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹29500 at 20% per year for 2 years (in ₹)?
5. 5.What amount will ₹26800 grow to in 2 years at 15% per year compound interest (in ₹)?
6. 6.What amount will ₹10000 grow to in 2 years at 25% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹50400 at 5% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹14000 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹8300 at 20% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹5800 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹13900. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
14. 14.What amount will ₹18100 grow to in 1 year at 4% per year compound interest (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
17. 17.Find the compound interest on ₹9600 at 25% per year for 3 years, compounded every year (in ₹).
18. 18.A town has 32000 people. The population grows by 25% every year. What will the population be after 3 years?
19. 19.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.A town has 37600 people. The population grows by 15% every year. What will the population be after 2 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹10800 at 5% per year for 2 years (in ₹)?
22. 22.What amount will ₹37500 grow to in 1 year at 15% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹3900 at 10% per year for 1 year, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹8700 at 10% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹49000 at 10% per year for 2 years (in ₹)?
26. 26.What amount will ₹22900 grow to in 1 year at 5% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹30100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
28. 28.Find the compound interest on ₹22200 at 12% per year for 1 year, compounded every year (in ₹).
29. 29.A town has 28400 people. The population grows by 25% every year. What will the population be after 1 year?
30. 30.A scooter is worth ₹49000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
31. 31.A town has 58800 people. The population grows by 10% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹25600 at 5% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹26900 grow to in 1 year at 5% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹42500 at 8% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹20000 at 25% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹37400. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
37. 37.A scooter is worth ₹44500. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
38. 38.Find the compound interest on ₹46500 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹45200 at 5% per year for 2 years (in ₹)?
40. 40.What amount will ₹12000 grow to in 1 year at 25% per year compound interest (in ₹)?

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