Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 385 · 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 ₹7700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
2. 2.Find the compound interest on ₹35500 at 20% per year for 3 years, compounded every year (in ₹).
3. 3.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹12500 at 12% per year for 1 year, compounded every year (in ₹).
5. 5.What amount will ₹40000 grow to in 2 years at 4% per year compound interest (in ₹)?
6. 6.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
7. 7.What amount will ₹14300 grow to in 1 year at 20% per year compound interest (in ₹)?
8. 8.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹17200 at 10% per year for 2 years, compounded every year (in ₹).
10. 10.A town has 25000 people. The population grows by 12% every year. What will the population be after 2 years?
11. 11.Find the compound interest on ₹21000 at 25% per year for 1 year, compounded every year (in ₹).
12. 12.What amount will ₹14000 grow to in 3 years at 20% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹30000 at 12% per year for 2 years (in ₹)?
14. 14.A scooter is worth ₹3200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
15. 15.Find the compound interest on ₹27200 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹10400 at 15% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹38400 at 15% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
19. 19.What amount will ₹5500 grow to in 1 year at 25% per year compound interest (in ₹)?
20. 20.A town has 40400 people. The population grows by 5% 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 ₹32500 at 8% per year for 2 years (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹39200 at 15% per year for 2 years (in ₹)?
23. 23.What amount will ₹32500 grow to in 2 years at 8% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹20900 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹46400 at 25% per year for 3 years, compounded every year (in ₹).
26. 26.A scooter is worth ₹6000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
27. 27.A town has 34400 people. The population grows by 25% every year. What will the population be after 2 years?
28. 28.What is the difference between the compound interest and the simple interest on ₹48000 at 15% per year for 2 years (in ₹)?
29. 29.What amount will ₹15500 grow to in 1 year at 20% per year compound interest (in ₹)?
30. 30.What amount will ₹45700 grow to in 1 year at 10% per year compound interest (in ₹)?
31. 31.A town has 50500 people. The population grows by 20% every year. What will the population be after 1 year?
32. 32.What is the difference between the compound interest and the simple interest on ₹9200 at 25% per year for 2 years (in ₹)?
33. 33.Find the compound interest on ₹18400 at 15% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹57000 at 10% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹22700 at 10% per year for 2 years (in ₹)?
37. 37.What amount will ₹20800 grow to in 3 years at 25% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹37500 at 12% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹32100 at 5% per year for 1 year, compounded every year (in ₹).
40. 40.What is the difference between the compound interest and the simple interest on ₹41600 at 15% per year for 2 years (in ₹)?

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