Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 142 · 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 48400 people. The population grows by 5% every year. What will the population be after 2 years?
2. 2.A scooter is worth ₹7100. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
3. 3.Find the compound interest on ₹47200 at 5% per year for 2 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹38900 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.A town has 32000 people. The population grows by 15% every year. What will the population be after 3 years?
6. 6.A scooter is worth ₹30000. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
7. 7.What amount will ₹52500 grow to in 2 years at 4% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹3600 at 20% per year for 2 years, compounded every year (in ₹).
9. 9.A scooter is worth ₹10300. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹23600 at 25% per year for 2 years (in ₹)?
11. 11.What amount will ₹45300 grow to in 1 year at 4% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹39200 at 25% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹28800 at 5% per year for 2 years (in ₹)?
14. 14.What amount will ₹60000 grow to in 2 years at 4% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
17. 17.What amount will ₹8400 grow to in 2 years at 25% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹22500 at 20% per year for 3 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹34600 at 20% per year for 1 year, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹54000 at 25% per year for 2 years, compounded every year (in ₹).
22. 22.A town has 28000 people. The population grows by 5% every year. What will the population be after 2 years?
23. 23.What amount will ₹46700 grow to in 2 years at 10% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹23800 at 15% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
26. 26.Find the compound interest on ₹8400 at 15% per year for 2 years, compounded every year (in ₹).
27. 27.Find the compound interest on ₹9000 at 10% per year for 3 years, compounded every year (in ₹).
28. 28.What is the difference between the compound interest and the simple interest on ₹10000 at 15% per year for 2 years (in ₹)?
29. 29.A scooter is worth ₹12000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
30. 30.Find the compound interest on ₹5900 at 25% per year for 1 year, compounded every year (in ₹).
31. 31.What amount will ₹13600 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹30800 at 5% per year for 2 years (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹40400 at 25% per year for 2 years (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹57200 at 15% per year for 2 years (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹54800 at 15% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹31600 at 10% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹58500 at 20% per year for 3 years, compounded every year (in ₹).

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