Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 31 · 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 ₹56200 grow to in 2 years at 20% per year compound interest (in ₹)?
2. 2.What amount will ₹43000 grow to in 1 year at 8% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
4. 4.A town has 8800 people. The population grows by 20% every year. What will the population be after 1 year?
5. 5.Find the compound interest on ₹57000 at 10% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹3700 at 25% per year for 1 year, compounded every year (in ₹).
7. 7.Find the compound interest on ₹56000 at 20% per year for 3 years, compounded every year (in ₹).
8. 8.A town has 15600 people. The population grows by 25% every year. What will the population be after 2 years?
9. 9.A town has 4000 people. The population grows by 20% every year. What will the population be after 2 years?
10. 10.What amount will ₹31700 grow to in 1 year at 10% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
13. 13.A scooter is worth ₹8200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
14. 14.Find the compound interest on ₹13000 at 10% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹45600 at 25% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹37600 at 25% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹58900 at 20% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹31600 at 20% per year for 2 years, compounded every year (in ₹).
19. 19.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
20. 20.What is the difference between the compound interest and the simple interest on ₹35200 at 5% per year for 2 years (in ₹)?
21. 21.Find the compound interest on ₹22400 at 25% per year for 3 years, compounded every year (in ₹).
22. 22.What amount will ₹23800 grow to in 2 years at 20% per year compound interest (in ₹)?
23. 23.A town has 20700 people. The population grows by 10% every year. What will the population be after 2 years?
24. 24.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹46600. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
26. 26.A town has 16000 people. The population grows by 10% every year. What will the population be after 3 years?
27. 27.What is the difference between the compound interest and the simple interest on ₹38800 at 15% per year for 2 years (in ₹)?
28. 28.What amount will ₹20000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹4200 at 10% per year for 2 years (in ₹)?
30. 30.A scooter is worth ₹53600. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
31. 31.A town has 15000 people. The population grows by 12% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹10000 at 12% per year for 2 years, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹35200 at 25% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹23600 at 25% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹14400 at 5% per year for 2 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹34400 at 5% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹37200 grow to in 2 years at 15% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹50000 at 4% per year for 2 years, compounded every year (in ₹).

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