Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 740 · 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 40000 people. The population grows by 5% every year. What will the population be after 3 years?
2. 2.What amount will ₹5200 grow to in 2 years at 15% per year compound interest (in ₹)?
3. 3.A town has 8900 people. The population grows by 4% every year. What will the population be after 1 year?
4. 4.What amount will ₹52000 grow to in 3 years at 10% per year compound interest (in ₹)?
5. 5.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹45600 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹3900 at 5% per year for 1 year, compounded every year (in ₹).
8. 8.What amount will ₹19600 grow to in 1 year at 12% per year compound interest (in ₹)?
9. 9.A town has 29600 people. The population grows by 25% every year. What will the population be after 2 years?
10. 10.Find the compound interest on ₹21000 at 10% per year for 3 years, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹8000 at 5% per year for 2 years (in ₹)?
12. 12.What amount will ₹11600 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.Find the compound interest on ₹29900 at 25% per year for 1 year, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
15. 15.What is the difference between the compound interest and the simple interest on ₹12600 at 10% per year for 2 years (in ₹)?
16. 16.Find the compound interest on ₹14800 at 25% per year for 2 years, compounded every year (in ₹).
17. 17.A scooter is worth ₹27500. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹51600 at 5% per year for 2 years (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹50700 at 10% per year for 2 years (in ₹)?
20. 20.A town has 36000 people. The population grows by 20% every year. What will the population be after 2 years?
21. 21.What amount will ₹7600 grow to in 2 years at 15% per year compound interest (in ₹)?
22. 22.Find the compound interest on ₹58000 at 5% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹17400 at 20% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹29500 at 4% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹40000 at 5% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹18400 at 5% per year for 2 years, compounded every year (in ₹).
28. 28.A town has 46100 people. The population grows by 10% every year. What will the population be after 1 year?
29. 29.What is the difference between the compound interest and the simple interest on ₹60000 at 12% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
31. 31.A scooter is worth ₹24900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
32. 32.A town has 54500 people. The population grows by 10% every year. What will the population be after 2 years?
33. 33.What amount will ₹2900 grow to in 2 years at 10% per year compound interest (in ₹)?
34. 34.What amount will ₹1600 grow to in 3 years at 25% per year compound interest (in ₹)?
35. 35.What amount will ₹32500 grow to in 2 years at 12% per year compound interest (in ₹)?
36. 36.What amount will ₹45600 grow to in 2 years at 25% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹55000 at 12% per year for 2 years, compounded every year (in ₹).
39. 39.A town has 26000 people. The population grows by 12% every year. What will the population be after 1 year?
40. 40.A scooter is worth ₹35100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?

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