Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 412 · 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 town has 26800 people. The population grows by 25% every year. What will the population be after 1 year?
2. 2.A scooter is worth ₹22400. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
3. 3.A scooter is worth ₹28800. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
4. 4.Find the compound interest on ₹22500 at 4% per year for 2 years, compounded every year (in ₹).
5. 5.What amount will ₹55900 grow to in 1 year at 10% per year compound interest (in ₹)?
6. 6.Find the compound interest on ₹5000 at 20% per year for 1 year, compounded every year (in ₹).
7. 7.What amount will ₹28000 grow to in 2 years at 5% per year compound interest (in ₹)?
8. 8.What amount will ₹6000 grow to in 2 years at 25% per year compound interest (in ₹)?
9. 9.What amount will ₹13600 grow to in 2 years at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹34100 at 20% per year for 2 years (in ₹)?
11. 11.A town has 58400 people. The population grows by 5% every year. What will the population be after 2 years?
12. 12.What is the difference between the compound interest and the simple interest on ₹47500 at 4% per year for 2 years (in ₹)?
13. 13.What amount will ₹7700 grow to in 1 year at 8% per year compound interest (in ₹)?
14. 14.What amount will ₹40000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹28000. Its value falls by 4% every year. What will it be worth after 1 year (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹49600 at 25% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹9600 at 25% per year for 3 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹50000 at 5% per year for 2 years (in ₹)?
19. 19.Find the compound interest on ₹20000 at 5% per year for 2 years, compounded every year (in ₹).
20. 20.Find the compound interest on ₹9300 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹34600 at 20% per year for 2 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹57200 at 10% per year for 2 years (in ₹)?
23. 23.What amount will ₹54600 grow to in 1 year at 5% per year compound interest (in ₹)?
24. 24.A town has 42400 people. The population grows by 20% every year. What will the population be after 1 year?
25. 25.What is the difference between the compound interest and the simple interest on ₹25200 at 20% per year for 2 years (in ₹)?
26. 26.What amount will ₹15300 grow to in 1 year at 20% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹37200 at 5% per year for 2 years (in ₹)?
28. 28.A town has 26500 people. The population grows by 25% every year. What will the population be after 1 year?
29. 29.What is the difference between the compound interest and the simple interest on ₹3200 at 5% per year for 2 years (in ₹)?
30. 30.What amount will ₹35000 grow to in 1 year at 4% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹6300 at 12% per year for 1 year, compounded every year (in ₹).
32. 32.What amount will ₹32500 grow to in 2 years at 4% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹45000. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
34. 34.What amount will ₹27500 grow to in 2 years at 8% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹50600 at 25% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
37. 37.A scooter is worth ₹55000. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
38. 38.Find the compound interest on ₹34400 at 25% per year for 2 years, compounded every year (in ₹).
39. 39.Find the compound interest on ₹6400 at 5% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹19800 grow to in 2 years at 10% per year compound interest (in ₹)?

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