Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 951 · 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 ₹50000 at 5% per year for 2 years (in ₹)?
2. 2.A scooter is worth ₹16000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
3. 3.What amount will ₹49600 grow to in 3 years at 25% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹42400 at 4% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹10000. Its value falls by 12% every year. What will it be worth after 2 years (in ₹)?
6. 6.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
7. 7.A town has 12500 people. The population grows by 12% every year. What will the population be after 2 years?
8. 8.What is the difference between the compound interest and the simple interest on ₹49200 at 15% per year for 2 years (in ₹)?
9. 9.A scooter is worth ₹47100. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
10. 10.What amount will ₹31200 grow to in 2 years at 25% per year compound interest (in ₹)?
11. 11.Find the compound interest on ₹38000 at 10% per year for 2 years, compounded every year (in ₹).
12. 12.A town has 29000 people. The population grows by 25% every year. What will the population be after 1 year?
13. 13.What amount will ₹57600 grow to in 2 years at 5% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹8400 at 15% per year for 2 years, compounded every year (in ₹).
15. 15.A town has 47000 people. The population grows by 10% every year. What will the population be after 3 years?
16. 16.Find the compound interest on ₹32500 at 12% per year for 2 years, compounded every year (in ₹).
17. 17.Find the compound interest on ₹34500 at 10% per year for 2 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹10000 at 12% per year for 2 years (in ₹)?
19. 19.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹48000 at 15% per year for 3 years, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹45000 at 4% per year for 2 years (in ₹)?
22. 22.What amount will ₹59200 grow to in 2 years at 15% per year compound interest (in ₹)?
23. 23.A scooter is worth ₹29000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
24. 24.What amount will ₹51200 grow to in 2 years at 5% per year compound interest (in ₹)?
25. 25.What amount will ₹17500 grow to in 2 years at 12% per year compound interest (in ₹)?
26. 26.What amount will ₹53200 grow to in 1 year at 15% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹27800. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
28. 28.What amount will ₹52000 grow to in 2 years at 10% per year compound interest (in ₹)?
29. 29.What amount will ₹48600 grow to in 1 year at 4% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹25600 at 25% per year for 3 years, compounded every year (in ₹).
31. 31.What amount will ₹11200 grow to in 2 years at 25% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹44000 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹41000 grow to in 3 years at 20% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹59600 at 12% per year for 1 year, compounded every year (in ₹).
35. 35.Find the compound interest on ₹19200 at 25% per year for 3 years, compounded every year (in ₹).
36. 36.A scooter is worth ₹52400. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹33000 at 10% per year for 2 years (in ₹)?
38. 38.What amount will ₹46000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.Find the compound interest on ₹14000 at 4% per year for 1 year, compounded every year (in ₹).
40. 40.A scooter is worth ₹54800. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?

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