Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 666 · 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 ₹58100 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.What amount will ₹37500 grow to in 2 years at 8% per year compound interest (in ₹)?
3. 3.What amount will ₹25000 grow to in 2 years at 8% per year compound interest (in ₹)?
4. 4.A scooter is worth ₹52000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
5. 5.A town has 19100 people. The population grows by 20% every year. What will the population be after 2 years?
6. 6.What amount will ₹12600 grow to in 1 year at 10% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹9700 at 10% per year for 2 years (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹60000 at 8% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹20400 at 25% per year for 2 years (in ₹)?
10. 10.What amount will ₹52100 grow to in 1 year at 12% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹34800 at 25% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹10400 at 20% per year for 2 years, compounded every year (in ₹).
13. 13.A scooter is worth ₹34000. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
14. 14.Find the compound interest on ₹30600 at 20% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹55900 at 10% per year for 2 years (in ₹)?
16. 16.A scooter is worth ₹32800. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
17. 17.A scooter is worth ₹54900. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
18. 18.Find the compound interest on ₹21700 at 20% per year for 2 years, compounded every year (in ₹).
19. 19.What is the difference between the compound interest and the simple interest on ₹48100 at 10% per year for 2 years (in ₹)?
20. 20.What amount will ₹17500 grow to in 1 year at 10% per year compound interest (in ₹)?
21. 21.A town has 35700 people. The population grows by 20% every year. What will the population be after 2 years?
22. 22.What amount will ₹19300 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.A town has 52500 people. The population grows by 8% every year. What will the population be after 2 years?
24. 24.What amount will ₹41600 grow to in 3 years at 25% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹54400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
26. 26.Find the compound interest on ₹20000 at 20% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹32500 at 8% per year for 2 years (in ₹)?
28. 28.A scooter is worth ₹17100. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
30. 30.A scooter is worth ₹8000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
31. 31.A town has 57500 people. The population grows by 12% every year. What will the population be after 2 years?
32. 32.What is the difference between the compound interest and the simple interest on ₹11300 at 10% per year for 2 years (in ₹)?
33. 33.A town has 10000 people. The population grows by 4% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹20000 at 12% per year for 2 years, compounded every year (in ₹).
35. 35.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹41000 at 25% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹4300 at 10% per year for 2 years (in ₹)?
38. 38.Find the compound interest on ₹7100 at 10% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹51200 at 15% per year for 2 years, compounded every year (in ₹).

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