Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 189 · 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 ₹55000 at 8% per year for 2 years (in ₹)?
2. 2.A town has 23000 people. The population grows by 10% every year. What will the population be after 3 years?
3. 3.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹26700 grow to in 1 year at 10% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹45600 at 25% per year for 2 years (in ₹)?
7. 7.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
9. 9.What amount will ₹27600 grow to in 1 year at 20% per year compound interest (in ₹)?
10. 10.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.A town has 27200 people. The population grows by 4% every year. What will the population be after 1 year?
12. 12.What amount will ₹22000 grow to in 3 years at 10% per year compound interest (in ₹)?
13. 13.What amount will ₹9300 grow to in 1 year at 5% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹43000 at 20% per year for 2 years (in ₹)?
15. 15.A town has 60000 people. The population grows by 8% every year. What will the population be after 2 years?
16. 16.What amount will ₹44500 grow to in 1 year at 15% per year compound interest (in ₹)?
17. 17.What amount will ₹55600 grow to in 2 years at 5% per year compound interest (in ₹)?
18. 18.What amount will ₹47400 grow to in 1 year at 25% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹21000 at 10% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹21200. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹59400 at 20% per year for 1 year, compounded every year (in ₹).
24. 24.A scooter is worth ₹47500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
25. 25.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
26. 26.A scooter is worth ₹9700. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
27. 27.What amount will ₹12300 grow to in 1 year at 25% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹4800 at 12% per year for 1 year, compounded every year (in ₹).
29. 29.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
30. 30.What amount will ₹3900 grow to in 2 years at 10% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹39300 at 20% per year for 2 years (in ₹)?
32. 32.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹18600 at 20% per year for 2 years (in ₹)?
34. 34.What amount will ₹32400 grow to in 2 years at 15% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹24500 at 20% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹19600 at 25% per year for 2 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹34300 at 20% per year for 2 years (in ₹)?
38. 38.What amount will ₹55700 grow to in 1 year at 25% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹59800 at 10% per year for 1 year, compounded every year (in ₹).
40. 40.What amount will ₹60000 grow to in 1 year at 10% per year compound interest (in ₹)?

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