Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 201 · 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 ₹48800 at 15% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹49400 grow to in 1 year at 8% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹48400 at 25% per year for 2 years (in ₹)?
4. 4.A town has 48000 people. The population grows by 5% every year. What will the population be after 2 years?
5. 5.What amount will ₹42900 grow to in 2 years at 20% per year compound interest (in ₹)?
6. 6.What amount will ₹20400 grow to in 2 years at 5% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹53200 at 25% per year for 2 years (in ₹)?
8. 8.Find the compound interest on ₹32400 at 10% per year for 2 years, compounded every year (in ₹).
9. 9.A town has 56000 people. The population grows by 15% every year. What will the population be after 3 years?
10. 10.A scooter is worth ₹36100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹38800 at 25% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹50000 at 4% per year for 2 years (in ₹)?
13. 13.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹20000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
16. 16.What amount will ₹13900 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.A town has 37000 people. The population grows by 20% 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 ₹44200 at 20% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹56400 at 25% per year for 2 years (in ₹)?
21. 21.What amount will ₹12500 grow to in 1 year at 25% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹2500 at 15% per year for 1 year, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
24. 24.A town has 32000 people. The population grows by 20% every year. What will the population be after 1 year?
25. 25.A town has 24000 people. The population grows by 10% every year. What will the population be after 3 years?
26. 26.Find the compound interest on ₹16900 at 10% per year for 1 year, compounded every year (in ₹).
27. 27.Find the compound interest on ₹38400 at 25% per year for 3 years, compounded every year (in ₹).
28. 28.A town has 4600 people. The population grows by 8% every year. What will the population be after 1 year?
29. 29.A scooter is worth ₹6400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
30. 30.A town has 56400 people. The population grows by 25% every year. What will the population be after 2 years?
31. 31.Find the compound interest on ₹39200 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹54000 at 10% per year for 3 years, compounded every year (in ₹).
33. 33.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
34. 34.A scooter is worth ₹13200. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹45700 at 20% per year for 2 years (in ₹)?
37. 37.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹26300 at 20% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹26800 at 25% per year for 2 years, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹59200 at 15% per year for 2 years (in ₹)?

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