Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 337 · 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 ₹12500 at 4% per year for 2 years (in ₹)?
2. 2.A town has 35800 people. The population grows by 5% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
4. 4.What amount will ₹21000 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹20000 at 4% per year for 2 years (in ₹)?
6. 6.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹16400 at 5% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹28700 at 10% per year for 1 year, compounded every year (in ₹).
9. 9.Find the compound interest on ₹51000 at 10% per year for 3 years, compounded every year (in ₹).
10. 10.Find the compound interest on ₹12800 at 25% per year for 3 years, compounded every year (in ₹).
11. 11.A town has 57500 people. The population grows by 4% every year. What will the population be after 2 years?
12. 12.What amount will ₹49300 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹4800 at 15% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹35200 at 5% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹32400 at 15% per year for 2 years (in ₹)?
16. 16.What amount will ₹53700 grow to in 1 year at 10% per year compound interest (in ₹)?
17. 17.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.A town has 58900 people. The population grows by 4% every year. What will the population be after 1 year?
19. 19.A town has 40700 people. The population grows by 4% every year. What will the population be after 1 year?
20. 20.What is the difference between the compound interest and the simple interest on ₹7600 at 15% per year for 2 years (in ₹)?
21. 21.What amount will ₹54600 grow to in 1 year at 8% per year compound interest (in ₹)?
22. 22.What amount will ₹44000 grow to in 3 years at 20% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹32300 at 20% per year for 2 years (in ₹)?
24. 24.What amount will ₹7000 grow to in 2 years at 10% per year compound interest (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹41100 at 10% per year for 2 years (in ₹)?
26. 26.What amount will ₹11200 grow to in 2 years at 5% per year compound interest (in ₹)?
27. 27.A town has 33600 people. The population grows by 10% every year. What will the population be after 2 years?
28. 28.What amount will ₹20300 grow to in 1 year at 10% per year compound interest (in ₹)?
29. 29.What amount will ₹48000 grow to in 3 years at 20% per year compound interest (in ₹)?
30. 30.What amount will ₹31000 grow to in 3 years at 10% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹20700 at 8% per year for 1 year, compounded every year (in ₹).
32. 32.Find the compound interest on ₹6500 at 20% per year for 3 years, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹43500 at 20% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹28400 at 5% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
36. 36.A town has 8000 people. The population grows by 20% every year. What will the population be after 3 years?
37. 37.A town has 35000 people. The population grows by 8% every year. What will the population be after 2 years?
38. 38.Find the compound interest on ₹52000 at 20% per year for 3 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹49200 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.Find the compound interest on ₹44500 at 4% per year for 1 year, compounded every year (in ₹).

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