Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 163 · 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 is the difference between the compound interest and the simple interest on ₹41800 at 10% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹51700 at 10% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹22200 at 20% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹16100 at 10% per year for 2 years (in ₹)?
5. 5.What amount will ₹7500 grow to in 2 years at 12% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹6000. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹12100 at 20% per year for 2 years (in ₹)?
8. 8.What amount will ₹26000 grow to in 3 years at 10% per year compound interest (in ₹)?
9. 9.What amount will ₹8000 grow to in 3 years at 25% per year compound interest (in ₹)?
10. 10.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹33600 at 15% per year for 2 years (in ₹)?
12. 12.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹16000 at 15% per year for 2 years (in ₹)?
14. 14.What amount will ₹50100 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.What amount will ₹28000 grow to in 3 years at 20% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹32200 at 8% per year for 1 year, compounded every year (in ₹).
17. 17.A town has 30800 people. The population grows by 20% every year. What will the population be after 2 years?
18. 18.What amount will ₹49200 grow to in 1 year at 15% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹17500 at 8% per year for 1 year, compounded every year (in ₹).
20. 20.A scooter is worth ₹49000. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
21. 21.A town has 14400 people. The population grows by 5% every year. What will the population be after 2 years?
22. 22.What is the difference between the compound interest and the simple interest on ₹57200 at 15% per year for 2 years (in ₹)?
23. 23.A scooter is worth ₹51100. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
24. 24.What amount will ₹55800 grow to in 1 year at 10% per year compound interest (in ₹)?
25. 25.A town has 58000 people. The population grows by 10% every year. What will the population be after 3 years?
26. 26.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
27. 27.Find the compound interest on ₹39400 at 8% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹6800 at 25% per year for 2 years (in ₹)?
30. 30.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹24800 at 5% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
33. 33.What amount will ₹35100 grow to in 1 year at 20% per year compound interest (in ₹)?
34. 34.A town has 19200 people. The population grows by 25% every year. What will the population be after 2 years?
35. 35.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
36. 36.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹37100 at 10% per year for 2 years (in ₹)?
38. 38.What amount will ₹50000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹55000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹14000 grow to in 2 years at 10% per year compound interest (in ₹)?

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