Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 775 · 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 ₹44400 at 10% per year for 2 years (in ₹)?
2. 2.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹13400 at 25% per year for 1 year, compounded every year (in ₹).
4. 4.A town has 45600 people. The population grows by 12% every year. What will the population be after 1 year?
5. 5.A town has 58400 people. The population grows by 10% every year. What will the population be after 1 year?
6. 6.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
7. 7.A scooter is worth ₹35400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
8. 8.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹35000 grow to in 3 years at 10% per year compound interest (in ₹)?
10. 10.A town has 8000 people. The population grows by 15% every year. What will the population be after 3 years?
11. 11.Find the compound interest on ₹32600 at 8% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹56700 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.What amount will ₹46300 grow to in 2 years at 20% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹55000 at 8% per year for 2 years, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹18600 at 10% per year for 2 years (in ₹)?
16. 16.What amount will ₹57200 grow to in 1 year at 5% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹8000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
18. 18.What amount will ₹3600 grow to in 1 year at 12% per year compound interest (in ₹)?
19. 19.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
21. 21.A scooter is worth ₹55500. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
22. 22.Find the compound interest on ₹11800 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.A town has 29800 people. The population grows by 10% every year. What will the population be after 2 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹36800 at 25% per year for 2 years (in ₹)?
25. 25.What amount will ₹18400 grow to in 2 years at 25% per year compound interest (in ₹)?
26. 26.A scooter is worth ₹11200. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
27. 27.A scooter is worth ₹17000. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
28. 28.What amount will ₹3200 grow to in 1 year at 5% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
30. 30.Find the compound interest on ₹5500 at 25% per year for 1 year, compounded every year (in ₹).
31. 31.A town has 14400 people. The population grows by 25% every year. What will the population be after 3 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹11200 at 5% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹2700 at 10% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹30200 at 10% per year for 2 years (in ₹)?
35. 35.What amount will ₹47500 grow to in 2 years at 8% per year compound interest (in ₹)?
36. 36.What amount will ₹38400 grow to in 1 year at 4% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.Find the compound interest on ₹29900 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.What amount will ₹3200 grow to in 1 year at 8% per year compound interest (in ₹)?
40. 40.A scooter is worth ₹5000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?

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