Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 868 · 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 30400 people. The population grows by 15% every year. What will the population be after 2 years?
2. 2.Find the compound interest on ₹22000 at 10% per year for 3 years, compounded every year (in ₹).
3. 3.Find the compound interest on ₹30000 at 15% per year for 2 years, compounded every year (in ₹).
4. 4.A scooter is worth ₹35000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
5. 5.A scooter is worth ₹47500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹20900 grow to in 2 years at 20% per year compound interest (in ₹)?
7. 7.A scooter is worth ₹22400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹49200 at 5% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹41300 at 5% per year for 1 year, compounded every year (in ₹).
10. 10.A scooter is worth ₹55000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
11. 11.A town has 22900 people. The population grows by 12% every year. What will the population be after 1 year?
12. 12.A scooter is worth ₹16300. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
13. 13.Find the compound interest on ₹42200 at 10% per year for 2 years, compounded every year (in ₹).
14. 14.What amount will ₹3200 grow to in 3 years at 25% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹54100 at 4% per year for 1 year, compounded every year (in ₹).
16. 16.What amount will ₹49500 grow to in 3 years at 20% per year compound interest (in ₹)?
17. 17.A scooter is worth ₹29800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
19. 19.A town has 17500 people. The population grows by 8% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹13600 at 20% per year for 2 years (in ₹)?
21. 21.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹3700 at 10% per year for 2 years (in ₹)?
23. 23.A town has 45000 people. The population grows by 12% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹17200 at 8% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹3900 at 12% per year for 1 year, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹37200 at 5% per year for 2 years (in ₹)?
28. 28.What amount will ₹35000 grow to in 2 years at 12% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹30700 at 15% per year for 1 year, compounded every year (in ₹).
30. 30.Find the compound interest on ₹51400 at 5% per year for 1 year, compounded every year (in ₹).
31. 31.A town has 28000 people. The population grows by 25% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹51500 at 5% per year for 1 year, compounded every year (in ₹).
33. 33.A town has 8700 people. The population grows by 20% every year. What will the population be after 1 year?
34. 34.What is the difference between the compound interest and the simple interest on ₹10000 at 4% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹32400 at 25% per year for 2 years (in ₹)?
36. 36.A scooter is worth ₹57500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹51600 at 25% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹16400 at 15% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹19100 at 20% per year for 2 years, compounded every year (in ₹).
40. 40.A scooter is worth ₹31000. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?

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