Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 527 · 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 ₹27500 at 12% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹19200 at 20% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹48400 at 15% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹12500 at 20% per year for 3 years, compounded every year (in ₹).
5. 5.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
6. 6.A scooter is worth ₹46500. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
7. 7.Find the compound interest on ₹34000 at 10% per year for 3 years, compounded every year (in ₹).
8. 8.Find the compound interest on ₹13500 at 20% per year for 3 years, compounded every year (in ₹).
9. 9.What amount will ₹48000 grow to in 3 years at 15% per year compound interest (in ₹)?
10. 10.What amount will ₹15100 grow to in 1 year at 5% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹24000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
12. 12.What amount will ₹35000 grow to in 2 years at 4% per year compound interest (in ₹)?
13. 13.What amount will ₹27800 grow to in 1 year at 10% per year compound interest (in ₹)?
14. 14.What amount will ₹23000 grow to in 1 year at 15% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹4200. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
16. 16.A town has 30000 people. The population grows by 8% every year. What will the population be after 2 years?
17. 17.What amount will ₹47200 grow to in 2 years at 25% per year compound interest (in ₹)?
18. 18.Find the compound interest on ₹28400 at 15% per year for 1 year, compounded every year (in ₹).
19. 19.What amount will ₹42100 grow to in 1 year at 5% per year compound interest (in ₹)?
20. 20.What amount will ₹47500 grow to in 1 year at 8% per year compound interest (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
22. 22.What amount will ₹43500 grow to in 3 years at 20% per year compound interest (in ₹)?
23. 23.What amount will ₹19800 grow to in 1 year at 10% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹37700 at 10% per year for 2 years (in ₹)?
25. 25.What amount will ₹57500 grow to in 2 years at 8% per year compound interest (in ₹)?
26. 26.What amount will ₹3000 grow to in 3 years at 10% per year compound interest (in ₹)?
27. 27.A scooter is worth ₹28000. Its value falls by 10% every year. What will it be worth after 3 years (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹55200 at 15% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹6800 at 25% per year for 2 years, compounded every year (in ₹).
30. 30.A town has 29700 people. The population grows by 4% every year. What will the population be after 1 year?
31. 31.A town has 56000 people. The population grows by 5% every year. What will the population be after 3 years?
32. 32.What amount will ₹7200 grow to in 2 years at 15% per year compound interest (in ₹)?
33. 33.A town has 13700 people. The population grows by 5% every year. What will the population be after 1 year?
34. 34.Find the compound interest on ₹5300 at 12% per year for 1 year, compounded every year (in ₹).
35. 35.A scooter is worth ₹27400. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
36. 36.A scooter is worth ₹32000. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
37. 37.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
38. 38.Find the compound interest on ₹8000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹42500 at 4% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹45000 at 8% per year for 2 years (in ₹)?

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