Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 139 · 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.Find the compound interest on ₹22000 at 8% per year for 1 year, compounded every year (in ₹).
2. 2.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
3. 3.What amount will ₹45500 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹58400 at 15% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹11300 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
7. 7.A town has 8000 people. The population grows by 25% every year. What will the population be after 3 years?
8. 8.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
9. 9.What amount will ₹16900 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
11. 11.What amount will ₹30000 grow to in 1 year at 5% per year compound interest (in ₹)?
12. 12.A town has 12500 people. The population grows by 8% every year. What will the population be after 2 years?
13. 13.Find the compound interest on ₹13700 at 15% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹10800 at 25% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹17200 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
18. 18.What is the difference between the compound interest and the simple interest on ₹52500 at 8% per year for 2 years (in ₹)?
19. 19.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
20. 20.A town has 2300 people. The population grows by 25% every year. What will the population be after 1 year?
21. 21.A town has 34100 people. The population grows by 15% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹54800 at 10% per year for 1 year, compounded every year (in ₹).
23. 23.A town has 8000 people. The population grows by 20% every year. What will the population be after 3 years?
24. 24.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹17600 at 5% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹50000 at 12% per year for 2 years (in ₹)?
27. 27.A town has 27300 people. The population grows by 10% every year. What will the population be after 1 year?
28. 28.Find the compound interest on ₹12500 at 20% per year for 3 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹49500 at 20% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹20300 at 20% per year for 2 years (in ₹)?
31. 31.A town has 50000 people. The population grows by 10% every year. What will the population be after 3 years?
32. 32.Find the compound interest on ₹24500 at 8% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹29900 grow to in 1 year at 20% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
35. 35.What amount will ₹23800 grow to in 1 year at 20% per year compound interest (in ₹)?
36. 36.A town has 15000 people. The population grows by 5% every year. What will the population be after 1 year?
37. 37.What is the difference between the compound interest and the simple interest on ₹38100 at 20% per year for 2 years (in ₹)?
38. 38.A town has 18400 people. The population grows by 15% every year. What will the population be after 2 years?
39. 39.A town has 6600 people. The population grows by 8% every year. What will the population be after 1 year?
40. 40.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?

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