Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 954 · 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 scooter is worth ₹7200. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
2. 2.Find the compound interest on ₹48400 at 5% per year for 2 years, compounded every year (in ₹).
3. 3.A town has 23400 people. The population grows by 10% every year. What will the population be after 2 years?
4. 4.What amount will ₹7100 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹41300 grow to in 1 year at 25% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹35300 at 20% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹44300 at 10% per year for 2 years (in ₹)?
8. 8.A town has 18500 people. The population grows by 12% every year. What will the population be after 1 year?
9. 9.Find the compound interest on ₹51000 at 20% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹34400. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
11. 11.Find the compound interest on ₹5400 at 15% per year for 1 year, compounded every year (in ₹).
12. 12.A town has 14800 people. The population grows by 5% every year. What will the population be after 2 years?
13. 13.What amount will ₹30000 grow to in 2 years at 8% per year compound interest (in ₹)?
14. 14.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
15. 15.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹43200 at 25% per year for 3 years, compounded every year (in ₹).
17. 17.A town has 17300 people. The population grows by 5% every year. What will the population be after 1 year?
18. 18.What amount will ₹33800 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.What amount will ₹11100 grow to in 1 year at 10% per year compound interest (in ₹)?
20. 20.A town has 15600 people. The population grows by 25% every year. What will the population be after 2 years?
21. 21.What is the difference between the compound interest and the simple interest on ₹26300 at 20% per year for 2 years (in ₹)?
22. 22.A town has 57500 people. The population grows by 8% every year. What will the population be after 2 years?
23. 23.What is the difference between the compound interest and the simple interest on ₹35000 at 4% per year for 2 years (in ₹)?
24. 24.What amount will ₹32900 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
26. 26.A town has 5200 people. The population grows by 25% every year. What will the population be after 2 years?
27. 27.A town has 40000 people. The population grows by 4% every year. What will the population be after 2 years?
28. 28.A scooter is worth ₹9200. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
29. 29.Find the compound interest on ₹21300 at 10% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 16000 people. The population grows by 15% every year. What will the population be after 3 years?
31. 31.What amount will ₹46500 grow to in 3 years at 20% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹46700 at 15% per year for 1 year, compounded every year (in ₹).
33. 33.What is the difference between the compound interest and the simple interest on ₹7800 at 20% per year for 2 years (in ₹)?
34. 34.Find the compound interest on ₹3600 at 20% per year for 2 years, compounded every year (in ₹).
35. 35.A scooter is worth ₹24300. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
36. 36.A town has 15000 people. The population grows by 15% every year. What will the population be after 1 year?
37. 37.What is the difference between the compound interest and the simple interest on ₹46000 at 15% per year for 2 years (in ₹)?
38. 38.A town has 40500 people. The population grows by 15% every year. What will the population be after 1 year?
39. 39.A scooter is worth ₹3000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
40. 40.Find the compound interest on ₹2400 at 20% per year for 1 year, compounded every year (in ₹).

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