Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 42 · 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.A scooter is worth ₹55000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
2. 2.What amount will ₹6000 grow to in 1 year at 5% per year compound interest (in ₹)?
3. 3.A town has 42600 people. The population grows by 25% every year. What will the population be after 1 year?
4. 4.A town has 59200 people. The population grows by 25% every year. What will the population be after 1 year?
5. 5.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
6. 6.What amount will ₹42000 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹2400 at 5% per year for 2 years (in ₹)?
9. 9.What amount will ₹30100 grow to in 1 year at 10% per year compound interest (in ₹)?
10. 10.Find the compound interest on ₹57100 at 8% per year for 1 year, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹8200 at 10% per year for 2 years (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
13. 13.What amount will ₹5000 grow to in 2 years at 4% per year compound interest (in ₹)?
14. 14.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
15. 15.Find the compound interest on ₹44000 at 25% per year for 2 years, compounded every year (in ₹).
16. 16.Find the compound interest on ₹47500 at 12% per year for 2 years, compounded every year (in ₹).
17. 17.What amount will ₹9000 grow to in 1 year at 15% per year compound interest (in ₹)?
18. 18.A town has 17000 people. The population grows by 10% every year. What will the population be after 3 years?
19. 19.What is the difference between the compound interest and the simple interest on ₹2800 at 20% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹26300 at 10% per year for 2 years, compounded every year (in ₹).
21. 21.Find the compound interest on ₹45100 at 4% per year for 1 year, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹28000 at 20% per year for 2 years (in ₹)?
23. 23.What amount will ₹43600 grow to in 2 years at 15% per year compound interest (in ₹)?
24. 24.Find the compound interest on ₹23200 at 15% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹12500 at 12% per year for 2 years (in ₹)?
26. 26.What amount will ₹47400 grow to in 1 year at 5% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹10000 at 5% per year for 2 years (in ₹)?
28. 28.Find the compound interest on ₹8000 at 25% per year for 3 years, compounded every year (in ₹).
29. 29.What amount will ₹57500 grow to in 2 years at 8% per year compound interest (in ₹)?
30. 30.What amount will ₹9200 grow to in 2 years at 10% per year compound interest (in ₹)?
31. 31.What amount will ₹19900 grow to in 1 year at 20% per year compound interest (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹5200 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹18500 grow to in 3 years at 20% per year compound interest (in ₹)?
34. 34.A scooter is worth ₹11400. Its value falls by 8% every year. What will it be worth after 1 year (in ₹)?
35. 35.Find the compound interest on ₹10100 at 4% per year for 1 year, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹41200 at 5% per year for 2 years (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹18400 at 15% per year for 2 years (in ₹)?
38. 38.A scooter is worth ₹40000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
39. 39.What amount will ₹31200 grow to in 2 years at 10% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹35000 at 12% per year for 2 years (in ₹)?

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