Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 419 · 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 ₹28400 at 5% per year for 2 years (in ₹)?
2. 2.A town has 12600 people. The population grows by 5% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹37900 at 20% per year for 1 year, compounded every year (in ₹).
4. 4.Find the compound interest on ₹26800 at 5% per year for 1 year, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹26000 at 20% per year for 2 years (in ₹)?
6. 6.What amount will ₹39000 grow to in 3 years at 10% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
8. 8.A scooter is worth ₹35000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹26800 at 5% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹57100 at 8% per year for 1 year, compounded every year (in ₹).
11. 11.Find the compound interest on ₹22000 at 20% per year for 3 years, compounded every year (in ₹).
12. 12.A town has 15500 people. The population grows by 20% every year. What will the population be after 3 years?
13. 13.What is the difference between the compound interest and the simple interest on ₹59200 at 25% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹32500 at 10% per year for 1 year, compounded every year (in ₹).
15. 15.What is the difference between the compound interest and the simple interest on ₹28800 at 15% per year for 2 years (in ₹)?
16. 16.What amount will ₹19400 grow to in 2 years at 20% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹13200 at 5% per year for 2 years (in ₹)?
19. 19.A town has 8900 people. The population grows by 12% every year. What will the population be after 1 year?
20. 20.Find the compound interest on ₹33000 at 10% per year for 3 years, compounded every year (in ₹).
21. 21.A scooter is worth ₹24000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
22. 22.Find the compound interest on ₹17500 at 12% per year for 2 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹39200 at 10% per year for 2 years (in ₹)?
24. 24.A town has 43200 people. The population grows by 15% every year. What will the population be after 2 years?
25. 25.What amount will ₹8700 grow to in 2 years at 10% per year compound interest (in ₹)?
26. 26.What amount will ₹14700 grow to in 1 year at 4% per year compound interest (in ₹)?
27. 27.A town has 8700 people. The population grows by 10% every year. What will the population be after 2 years?
28. 28.A scooter is worth ₹52500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹44800 at 25% per year for 2 years (in ₹)?
30. 30.What amount will ₹20500 grow to in 3 years at 20% per year compound interest (in ₹)?
31. 31.What amount will ₹56900 grow to in 2 years at 20% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹48000 at 5% per year for 2 years (in ₹)?
33. 33.A town has 58100 people. The population grows by 10% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹46900 at 5% per year for 1 year, compounded every year (in ₹).
35. 35.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
36. 36.A scooter is worth ₹53800. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
37. 37.What amount will ₹4000 grow to in 3 years at 10% per year compound interest (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹34300 at 20% per year for 2 years (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹37700 at 20% per year for 2 years (in ₹)?
40. 40.A scooter is worth ₹22500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?

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