Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 657 · 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 ₹17900 at 20% per year for 2 years (in ₹)?
2. 2.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
3. 3.Find the compound interest on ₹12500 at 10% per year for 1 year, compounded every year (in ₹).
4. 4.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
5. 5.A town has 56000 people. The population grows by 25% every year. What will the population be after 3 years?
6. 6.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
7. 7.What is the difference between the compound interest and the simple interest on ₹56300 at 10% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹30600. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
9. 9.A town has 36800 people. The population grows by 5% every year. What will the population be after 1 year?
10. 10.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
11. 11.A town has 40000 people. The population grows by 12% every year. What will the population be after 2 years?
12. 12.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
13. 13.What amount will ₹26000 grow to in 2 years at 25% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹7500 at 12% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹16800 at 5% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹41700 at 20% per year for 1 year, compounded every year (in ₹).
17. 17.What amount will ₹47600 grow to in 1 year at 4% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹30700 at 20% per year for 1 year, compounded every year (in ₹).
20. 20.What amount will ₹9900 grow to in 1 year at 20% per year compound interest (in ₹)?
21. 21.Find the compound interest on ₹43500 at 20% per year for 3 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹30000 at 5% per year for 2 years (in ₹)?
23. 23.A town has 26000 people. The population grows by 10% every year. What will the population be after 3 years?
24. 24.A scooter is worth ₹21100. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
25. 25.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
26. 26.A town has 57000 people. The population grows by 10% every year. What will the population be after 3 years?
27. 27.What amount will ₹16800 grow to in 2 years at 15% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹23300 at 10% per year for 1 year, compounded every year (in ₹).
29. 29.A scooter is worth ₹7000. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹55200 at 5% per year for 2 years (in ₹)?
31. 31.Find the compound interest on ₹39600 at 5% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹31200 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹5000 grow to in 2 years at 12% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹5000 at 10% per year for 3 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹32800 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.A town has 21500 people. The population grows by 20% every year. What will the population be after 3 years?
38. 38.Find the compound interest on ₹13900 at 8% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹39300 at 20% per year for 2 years (in ₹)?
40. 40.What amount will ₹19500 grow to in 3 years at 20% per year compound interest (in ₹)?

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