Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 640 · 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 amount will ₹37600 grow to in 2 years at 15% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹10000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
3. 3.A town has 28200 people. The population grows by 10% every year. What will the population be after 1 year?
4. 4.What amount will ₹24500 grow to in 3 years at 20% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹21000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
6. 6.A scooter is worth ₹45000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹28400 at 25% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
10. 10.What amount will ₹28900 grow to in 1 year at 4% per year compound interest (in ₹)?
11. 11.A town has 2300 people. The population grows by 15% every year. What will the population be after 1 year?
12. 12.A town has 38100 people. The population grows by 5% every year. What will the population be after 1 year?
13. 13.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹9500 at 20% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹35900 at 20% per year for 2 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹16800 at 10% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹12000 at 15% per year for 2 years, compounded every year (in ₹).
18. 18.Find the compound interest on ₹56700 at 12% per year for 1 year, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹60000 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹12800 at 20% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹49200 at 25% per year for 2 years, compounded every year (in ₹).
22. 22.A town has 17400 people. The population grows by 20% every year. What will the population be after 2 years?
23. 23.A scooter is worth ₹5000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
24. 24.Find the compound interest on ₹2800 at 5% per year for 2 years, compounded every year (in ₹).
25. 25.Find the compound interest on ₹8900 at 4% per year for 1 year, compounded every year (in ₹).
26. 26.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹32500. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
30. 30.A scooter is worth ₹12800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
31. 31.A scooter is worth ₹39400. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
32. 32.A scooter is worth ₹47000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
33. 33.A town has 4800 people. The population grows by 25% every year. What will the population be after 3 years?
34. 34.Find the compound interest on ₹14000 at 20% per year for 3 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
36. 36.A town has 6000 people. The population grows by 10% every year. What will the population be after 3 years?
37. 37.Find the compound interest on ₹53600 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹52100 at 20% per year for 2 years (in ₹)?
39. 39.What amount will ₹5100 grow to in 2 years at 20% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹15000 at 4% per year for 2 years, compounded every year (in ₹).

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