Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 875 · 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.A town has 20400 people. The population grows by 25% every year. What will the population be after 2 years?
2. 2.What is the difference between the compound interest and the simple interest on ₹18800 at 25% per year for 2 years (in ₹)?
3. 3.A town has 32000 people. The population grows by 25% every year. What will the population be after 2 years?
4. 4.What amount will ₹55900 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.A town has 50400 people. The population grows by 5% every year. What will the population be after 2 years?
6. 6.What amount will ₹40800 grow to in 1 year at 20% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹43100 at 4% per year for 1 year, compounded every year (in ₹).
8. 8.Find the compound interest on ₹50000 at 12% per year for 2 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹20000 at 15% per year for 2 years, compounded every year (in ₹).
12. 12.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
14. 14.What amount will ₹55900 grow to in 1 year at 10% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹56000 at 10% per year for 3 years, compounded every year (in ₹).
18. 18.What amount will ₹39200 grow to in 2 years at 5% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
20. 20.What amount will ₹44000 grow to in 2 years at 25% per year compound interest (in ₹)?
21. 21.What amount will ₹15600 grow to in 2 years at 25% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹22400 at 5% per year for 2 years (in ₹)?
23. 23.A town has 12500 people. The population grows by 4% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹28500 at 20% per year for 2 years, compounded every year (in ₹).
25. 25.What amount will ₹15200 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹21800 at 5% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹17500 at 12% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹42000 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 ₹57600 at 25% per year for 2 years (in ₹)?
30. 30.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹11200 at 5% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹21100 at 8% per year for 1 year, compounded every year (in ₹).
33. 33.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
34. 34.What amount will ₹44800 grow to in 1 year at 15% per year compound interest (in ₹)?
35. 35.What amount will ₹24700 grow to in 1 year at 20% per year compound interest (in ₹)?
36. 36.What amount will ₹26400 grow to in 1 year at 15% per year compound interest (in ₹)?
37. 37.What amount will ₹55000 grow to in 2 years at 12% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
39. 39.Find the compound interest on ₹2000 at 5% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?

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