Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 963 · 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 ₹36300 at 10% per year for 2 years (in ₹)?
2. 2.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
3. 3.What amount will ₹14400 grow to in 2 years at 5% per year compound interest (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹42000 at 20% per year for 2 years (in ₹)?
5. 5.What amount will ₹23400 grow to in 2 years at 10% per year compound interest (in ₹)?
6. 6.What amount will ₹11000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.What amount will ₹32000 grow to in 3 years at 10% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
10. 10.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
11. 11.What amount will ₹40000 grow to in 3 years at 15% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹16400 at 10% per year for 2 years (in ₹)?
14. 14.What amount will ₹52500 grow to in 2 years at 12% per year compound interest (in ₹)?
15. 15.What amount will ₹6400 grow to in 3 years at 25% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹52000 at 10% per year for 3 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹16000 at 5% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹28800 at 5% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹31000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
20. 20.What amount will ₹44400 grow to in 2 years at 15% per year compound interest (in ₹)?
21. 21.A scooter is worth ₹25000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
22. 22.A scooter is worth ₹48900. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
23. 23.A town has 49200 people. The population grows by 25% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹46000 at 20% per year for 3 years, compounded every year (in ₹).
25. 25.What amount will ₹49300 grow to in 1 year at 25% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹11200 at 25% per year for 3 years, compounded every year (in ₹).
27. 27.A scooter is worth ₹20000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
28. 28.What amount will ₹33600 grow to in 1 year at 4% per year compound interest (in ₹)?
29. 29.Find the compound interest on ₹23900 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹55000 grow to in 2 years at 8% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹48000 at 20% per year for 2 years (in ₹)?
32. 32.What amount will ₹36900 grow to in 1 year at 10% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
34. 34.A town has 48200 people. The population grows by 15% every year. What will the population be after 1 year?
35. 35.What amount will ₹6800 grow to in 1 year at 10% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹51500 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹52500 at 4% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹56000 at 15% per year for 3 years, compounded every year (in ₹).
40. 40.A town has 5000 people. The population grows by 10% every year. What will the population be after 3 years?

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