Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 84 · 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.Find the compound interest on ₹24000 at 10% per year for 1 year, compounded every year (in ₹).
2. 2.A scooter is worth ₹24500. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
3. 3.A town has 20400 people. The population grows by 5% every year. What will the population be after 2 years?
4. 4.What amount will ₹22500 grow to in 2 years at 12% per year compound interest (in ₹)?
5. 5.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
6. 6.What amount will ₹5500 grow to in 2 years at 10% per year compound interest (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹48400 at 25% per year for 2 years (in ₹)?
8. 8.What amount will ₹45600 grow to in 2 years at 5% per year compound interest (in ₹)?
9. 9.A scooter is worth ₹35600. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
10. 10.What amount will ₹48000 grow to in 3 years at 5% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹40000 at 15% per year for 3 years, compounded every year (in ₹).
12. 12.Find the compound interest on ₹11400 at 10% per year for 1 year, compounded every year (in ₹).
13. 13.A scooter is worth ₹36000. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹26600 at 20% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹27500 at 12% per year for 2 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
18. 18.Find the compound interest on ₹21400 at 12% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹58100 grow to in 2 years at 20% per year compound interest (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹11200 at 25% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹23400 at 5% per year for 1 year, compounded every year (in ₹).
23. 23.Find the compound interest on ₹21600 at 25% per year for 2 years, compounded every year (in ₹).
24. 24.What amount will ₹24100 grow to in 1 year at 5% per year compound interest (in ₹)?
25. 25.A scooter is worth ₹35000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
26. 26.A town has 18900 people. The population grows by 4% every year. What will the population be after 1 year?
27. 27.A town has 32500 people. The population grows by 15% every year. What will the population be after 1 year?
28. 28.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
29. 29.A scooter is worth ₹59700. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
30. 30.What amount will ₹50200 grow to in 1 year at 20% per year compound interest (in ₹)?
31. 31.What amount will ₹4200 grow to in 1 year at 8% per year compound interest (in ₹)?
32. 32.Find the compound interest on ₹16000 at 15% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹18400 grow to in 1 year at 25% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹12800 at 5% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹16700 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.Find the compound interest on ₹8000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹40400 at 25% per year for 2 years, compounded every year (in ₹).
38. 38.What amount will ₹8000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹35600 at 15% per year for 2 years, compounded every year (in ₹).
40. 40.Find the compound interest on ₹14900 at 10% per year for 2 years, compounded every year (in ₹).

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