Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 338 · 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 ₹6200 grow to in 2 years at 10% per year compound interest (in ₹)?
2. 2.A scooter is worth ₹50100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
4. 4.What amount will ₹59000 grow to in 1 year at 5% per year compound interest (in ₹)?
5. 5.What amount will ₹6400 grow to in 2 years at 25% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹6100 at 8% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹59200 grow to in 1 year at 5% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹41400 at 4% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹44000 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.Find the compound interest on ₹58500 at 4% per year for 1 year, compounded every year (in ₹).
12. 12.Find the compound interest on ₹16200 at 10% per year for 1 year, compounded every year (in ₹).
13. 13.A town has 56800 people. The population grows by 5% every year. What will the population be after 2 years?
14. 14.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹50000 grow to in 2 years at 8% per year compound interest (in ₹)?
16. 16.A town has 30000 people. The population grows by 8% every year. What will the population be after 2 years?
17. 17.What amount will ₹7800 grow to in 1 year at 5% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹24000 at 5% per year for 3 years, compounded every year (in ₹).
19. 19.A scooter is worth ₹48200. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
20. 20.A town has 32800 people. The population grows by 5% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹24000 at 15% per year for 3 years, compounded every year (in ₹).
22. 22.Find the compound interest on ₹32200 at 10% per year for 2 years, compounded every year (in ₹).
23. 23.A scooter is worth ₹11800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
24. 24.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
25. 25.A town has 50600 people. The population grows by 10% every year. What will the population be after 2 years?
26. 26.What is the difference between the compound interest and the simple interest on ₹22800 at 5% per year for 2 years (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹42000 at 5% per year for 2 years, compounded every year (in ₹).
29. 29.A scooter is worth ₹45600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
30. 30.A scooter is worth ₹6700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
31. 31.Find the compound interest on ₹17700 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹56000 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹40000 at 5% per year for 3 years, compounded every year (in ₹).
34. 34.A town has 27200 people. The population grows by 10% every year. What will the population be after 1 year?
35. 35.Find the compound interest on ₹52800 at 15% per year for 2 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹33300 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.A scooter is worth ₹48100. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹2500 at 8% per year for 2 years (in ₹)?
39. 39.What amount will ₹31500 grow to in 3 years at 20% per year compound interest (in ₹)?
40. 40.Find the compound interest on ₹2200 at 5% per year for 1 year, compounded every year (in ₹).

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