Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 661 · 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.What is the difference between the compound interest and the simple interest on ₹19200 at 5% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹27500 at 4% per year for 2 years (in ₹)?
3. 3.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
5. 5.A scooter is worth ₹17000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
6. 6.A town has 24500 people. The population grows by 25% every year. What will the population be after 1 year?
7. 7.A town has 42500 people. The population grows by 4% every year. What will the population be after 1 year?
8. 8.Find the compound interest on ₹39400 at 12% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
10. 10.A town has 29800 people. The population grows by 20% every year. What will the population be after 1 year?
11. 11.What amount will ₹49100 grow to in 1 year at 10% per year compound interest (in ₹)?
12. 12.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
13. 13.A scooter is worth ₹29600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹57500 at 4% per year for 2 years (in ₹)?
15. 15.What amount will ₹59400 grow to in 1 year at 10% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹45100 at 20% per year for 2 years, compounded every year (in ₹).
17. 17.A town has 22500 people. The population grows by 4% every year. What will the population be after 2 years?
18. 18.Find the compound interest on ₹20400 at 25% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹36400 at 5% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹10500 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.What amount will ₹52200 grow to in 1 year at 4% per year compound interest (in ₹)?
22. 22.What amount will ₹35600 grow to in 2 years at 5% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹30000 at 5% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹43600 at 25% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹40000 grow to in 2 years at 12% per year compound interest (in ₹)?
26. 26.What amount will ₹12100 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
28. 28.Find the compound interest on ₹8000 at 5% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹32600 at 4% per year for 1 year, compounded every year (in ₹).
30. 30.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹2100 at 20% per year for 2 years (in ₹)?
32. 32.A scooter is worth ₹45200. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
33. 33.Find the compound interest on ₹47000 at 10% per year for 3 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹37600 at 15% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹42500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
37. 37.What amount will ₹50800 grow to in 1 year at 5% per year compound interest (in ₹)?
38. 38.A scooter is worth ₹17500. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
39. 39.Find the compound interest on ₹51200 at 25% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹47900 grow to in 1 year at 4% per year compound interest (in ₹)?

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