Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 836 · 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 60000 people. The population grows by 10% every year. What will the population be after 1 year?
2. 2.Find the compound interest on ₹8400 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 58900 people. The population grows by 10% every year. What will the population be after 1 year?
4. 4.What is the difference between the compound interest and the simple interest on ₹13000 at 20% per year for 2 years (in ₹)?
5. 5.What amount will ₹32600 grow to in 2 years at 20% per year compound interest (in ₹)?
6. 6.What amount will ₹57600 grow to in 3 years at 25% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
8. 8.A town has 11700 people. The population grows by 10% every year. What will the population be after 1 year?
9. 9.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹29600 at 5% per year for 2 years (in ₹)?
11. 11.Find the compound interest on ₹8000 at 20% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹3000 grow to in 2 years at 10% per year compound interest (in ₹)?
13. 13.What amount will ₹43000 grow to in 3 years at 20% per year compound interest (in ₹)?
14. 14.A scooter is worth ₹27500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
15. 15.What amount will ₹40000 grow to in 2 years at 15% per year compound interest (in ₹)?
16. 16.What amount will ₹26700 grow to in 1 year at 20% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹27500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
20. 20.Find the compound interest on ₹58500 at 20% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹8400 at 25% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹36000 at 15% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹26100 grow to in 1 year at 25% per year compound interest (in ₹)?
25. 25.What amount will ₹2400 grow to in 2 years at 5% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹51000 at 20% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹31400 at 15% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹26700 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹8200 at 10% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹31900 at 20% per year for 2 years (in ₹)?
31. 31.A town has 40000 people. The population grows by 15% every year. What will the population be after 3 years?
32. 32.A town has 60000 people. The population grows by 25% every year. What will the population be after 1 year?
33. 33.Find the compound interest on ₹4700 at 20% per year for 2 years, compounded every year (in ₹).
34. 34.A scooter is worth ₹12500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
35. 35.What amount will ₹12100 grow to in 1 year at 12% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
37. 37.A town has 55300 people. The population grows by 10% every year. What will the population be after 2 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹16100 at 10% per year for 2 years (in ₹)?
39. 39.What amount will ₹21700 grow to in 1 year at 15% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹17600 at 15% per year for 2 years, compounded every year (in ₹).

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