Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 397 · 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 50200 people. The population grows by 25% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹24900 at 10% per year for 2 years (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹25400 at 20% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹3700 at 10% per year for 2 years (in ₹)?
6. 6.Find the compound interest on ₹43600 at 25% per year for 2 years, compounded every year (in ₹).
7. 7.What is the difference between the compound interest and the simple interest on ₹7500 at 8% per year for 2 years (in ₹)?
8. 8.A town has 32800 people. The population grows by 25% every year. What will the population be after 2 years?
9. 9.A scooter is worth ₹45900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹7800 at 10% per year for 2 years (in ₹)?
11. 11.A town has 17000 people. The population grows by 20% every year. What will the population be after 1 year?
12. 12.Find the compound interest on ₹25500 at 15% per year for 1 year, compounded every year (in ₹).
13. 13.Find the compound interest on ₹16000 at 25% per year for 3 years, compounded every year (in ₹).
14. 14.What amount will ₹12800 grow to in 3 years at 25% per year compound interest (in ₹)?
15. 15.What amount will ₹35600 grow to in 2 years at 5% per year compound interest (in ₹)?
16. 16.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
17. 17.What amount will ₹7000 grow to in 1 year at 5% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹47500 at 8% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹59600. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
20. 20.A town has 50000 people. The population grows by 10% every year. What will the population be after 3 years?
21. 21.What amount will ₹27900 grow to in 1 year at 12% per year compound interest (in ₹)?
22. 22.What amount will ₹2500 grow to in 2 years at 12% per year compound interest (in ₹)?
23. 23.A scooter is worth ₹51200. Its value falls by 15% every year. What will it be worth after 2 years (in ₹)?
24. 24.A scooter is worth ₹32800. Its value falls by 25% every year. What will it be worth after 2 years (in ₹)?
25. 25.A town has 48000 people. The population grows by 5% every year. What will the population be after 3 years?
26. 26.A town has 33400 people. The population grows by 10% every year. What will the population be after 2 years?
27. 27.Find the compound interest on ₹48800 at 10% per year for 1 year, compounded every year (in ₹).
28. 28.What amount will ₹49000 grow to in 3 years at 10% per year compound interest (in ₹)?
29. 29.What is the difference between the compound interest and the simple interest on ₹22500 at 8% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹43100 at 20% per year for 1 year, compounded every year (in ₹).
31. 31.A town has 56000 people. The population grows by 5% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹25500 at 10% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹59600 grow to in 2 years at 5% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹48000. Its value falls by 5% every year. What will it be worth after 3 years (in ₹)?
36. 36.A scooter is worth ₹52800. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
37. 37.A town has 15000 people. The population grows by 10% every year. What will the population be after 3 years?
38. 38.Find the compound interest on ₹4300 at 15% per year for 1 year, compounded every year (in ₹).
39. 39.A scooter is worth ₹12500. Its value falls by 8% every year. What will it be worth after 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹50700 at 10% per year for 2 years (in ₹)?

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