Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 364 · 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 48000 people. The population grows by 5% every year. What will the population be after 3 years?
2. 2.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
3. 3.A town has 55500 people. The population grows by 20% every year. What will the population be after 2 years?
4. 4.What is the difference between the compound interest and the simple interest on ₹15600 at 5% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
7. 7.A town has 59200 people. The population grows by 15% every year. What will the population be after 2 years?
8. 8.What amount will ₹10000 grow to in 2 years at 4% per year compound interest (in ₹)?
9. 9.What amount will ₹16500 grow to in 1 year at 15% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹14000 at 15% per year for 2 years (in ₹)?
11. 11.What amount will ₹38200 grow to in 1 year at 12% per year compound interest (in ₹)?
12. 12.A scooter is worth ₹12300. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
13. 13.What amount will ₹17200 grow to in 2 years at 5% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹9300 at 10% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹48700 at 15% per year for 1 year, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹6800 at 5% per year for 2 years (in ₹)?
17. 17.What amount will ₹40000 grow to in 2 years at 12% per year compound interest (in ₹)?
18. 18.A scooter is worth ₹20000. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
19. 19.What amount will ₹16600 grow to in 1 year at 25% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
21. 21.What amount will ₹5900 grow to in 1 year at 20% per year compound interest (in ₹)?
22. 22.A town has 2000 people. The population grows by 20% every year. What will the population be after 3 years?
23. 23.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
24. 24.A scooter is worth ₹11900. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹26000 at 25% per year for 2 years (in ₹)?
26. 26.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
27. 27.A town has 2500 people. The population grows by 8% every year. What will the population be after 2 years?
28. 28.What amount will ₹27300 grow to in 1 year at 5% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹49400 at 20% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 3200 people. The population grows by 25% every year. What will the population be after 3 years?
31. 31.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
32. 32.What amount will ₹6300 grow to in 2 years at 20% per year compound interest (in ₹)?
33. 33.What amount will ₹38000 grow to in 2 years at 5% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹39000 at 10% per year for 3 years, compounded every year (in ₹).
35. 35.A scooter is worth ₹12700. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
36. 36.What amount will ₹39600 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.What amount will ₹57600 grow to in 2 years at 5% per year compound interest (in ₹)?
38. 38.What amount will ₹10000 grow to in 3 years at 20% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹44100 at 10% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?

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