Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 10 · 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 ₹21200 at 5% per year for 2 years (in ₹)?
2. 2.What amount will ₹33000 grow to in 1 year at 10% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹12500 at 4% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹44900 at 8% per year for 1 year, compounded every year (in ₹).
5. 5.Find the compound interest on ₹18000 at 10% per year for 3 years, compounded every year (in ₹).
6. 6.Find the compound interest on ₹42800 at 5% per year for 1 year, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
8. 8.What amount will ₹12500 grow to in 2 years at 12% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹44000 at 25% per year for 2 years, compounded every year (in ₹).
10. 10.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
11. 11.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
12. 12.What amount will ₹28400 grow to in 1 year at 5% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹42000 at 25% per year for 2 years (in ₹)?
14. 14.What amount will ₹45000 grow to in 3 years at 20% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹54800 at 15% per year for 1 year, compounded every year (in ₹).
16. 16.A town has 50000 people. The population grows by 25% every year. What will the population be after 2 years?
17. 17.Find the compound interest on ₹40000 at 10% per year for 3 years, compounded every year (in ₹).
18. 18.A scooter is worth ₹48500. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
19. 19.What amount will ₹15000 grow to in 2 years at 4% per year compound interest (in ₹)?
20. 20.A town has 30300 people. The population grows by 25% every year. What will the population be after 1 year?
21. 21.What amount will ₹8000 grow to in 3 years at 5% per year compound interest (in ₹)?
22. 22.A town has 57500 people. The population grows by 12% every year. What will the population be after 2 years?
23. 23.What amount will ₹54500 grow to in 1 year at 4% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹50800 at 5% per year for 2 years (in ₹)?
25. 25.A town has 6200 people. The population grows by 12% every year. What will the population be after 1 year?
26. 26.Find the compound interest on ₹24000 at 25% per year for 3 years, compounded every year (in ₹).
27. 27.What is the difference between the compound interest and the simple interest on ₹31200 at 10% per year for 2 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹10400 at 25% per year for 2 years (in ₹)?
29. 29.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
30. 30.A town has 7500 people. The population grows by 8% every year. What will the population be after 2 years?
31. 31.What amount will ₹9300 grow to in 1 year at 25% per year compound interest (in ₹)?
32. 32.A town has 59900 people. The population grows by 8% every year. What will the population be after 1 year?
33. 33.A town has 31600 people. The population grows by 5% every year. What will the population be after 1 year?
34. 34.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
35. 35.A town has 32000 people. The population grows by 5% every year. What will the population be after 3 years?
36. 36.A scooter is worth ₹14600. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
37. 37.A town has 9100 people. The population grows by 10% every year. What will the population be after 2 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹11100 at 20% per year for 2 years (in ₹)?
39. 39.What amount will ₹48400 grow to in 1 year at 10% per year compound interest (in ₹)?
40. 40.What amount will ₹14000 grow to in 2 years at 25% per year compound interest (in ₹)?

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