Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 906 · 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 24100 people. The population grows by 4% every year. What will the population be after 1 year?
2. 2.A scooter is worth ₹27000. Its value falls by 20% every year. What will it be worth after 3 years (in ₹)?
3. 3.A town has 58800 people. The population grows by 4% every year. What will the population be after 1 year?
4. 4.A town has 48000 people. The population grows by 5% every year. What will the population be after 2 years?
5. 5.What is the difference between the compound interest and the simple interest on ₹17200 at 25% per year for 2 years (in ₹)?
6. 6.A town has 22800 people. The population grows by 15% every year. What will the population be after 2 years?
7. 7.What amount will ₹2000 grow to in 3 years at 10% per year compound interest (in ₹)?
8. 8.Find the compound interest on ₹31700 at 10% per year for 1 year, compounded every year (in ₹).
9. 9.What is the difference between the compound interest and the simple interest on ₹30000 at 20% per year for 2 years (in ₹)?
10. 10.Find the compound interest on ₹57600 at 10% per year for 2 years, compounded every year (in ₹).
11. 11.A town has 39600 people. The population grows by 10% every year. What will the population be after 1 year?
12. 12.A town has 33200 people. The population grows by 5% every year. What will the population be after 2 years?
13. 13.Find the compound interest on ₹56000 at 5% per year for 3 years, compounded every year (in ₹).
14. 14.What is the difference between the compound interest and the simple interest on ₹25000 at 8% per year for 2 years (in ₹)?
15. 15.A town has 58300 people. The population grows by 4% every year. What will the population be after 1 year?
16. 16.What is the difference between the compound interest and the simple interest on ₹13400 at 20% per year for 2 years (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹19200 at 5% per year for 2 years (in ₹)?
18. 18.What amount will ₹5100 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
20. 20.A town has 28300 people. The population grows by 20% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹47200 at 5% per year for 2 years, compounded every year (in ₹).
22. 22.What amount will ₹24000 grow to in 1 year at 5% per year compound interest (in ₹)?
23. 23.What is the difference between the compound interest and the simple interest on ₹59500 at 10% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹33500 at 10% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹18800 at 15% per year for 2 years (in ₹)?
26. 26.What amount will ₹5400 grow to in 2 years at 20% per year compound interest (in ₹)?
27. 27.What is the difference between the compound interest and the simple interest on ₹11600 at 15% per year for 2 years (in ₹)?
28. 28.What amount will ₹7700 grow to in 1 year at 25% per year compound interest (in ₹)?
29. 29.What amount will ₹12800 grow to in 3 years at 25% per year compound interest (in ₹)?
30. 30.What amount will ₹17700 grow to in 1 year at 5% per year compound interest (in ₹)?
31. 31.What amount will ₹32900 grow to in 1 year at 4% per year compound interest (in ₹)?
32. 32.What amount will ₹44800 grow to in 3 years at 25% per year compound interest (in ₹)?
33. 33.What amount will ₹3000 grow to in 3 years at 10% per year compound interest (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹15000 at 4% per year for 2 years (in ₹)?
35. 35.A scooter is worth ₹38400. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
36. 36.Find the compound interest on ₹42100 at 4% per year for 1 year, compounded every year (in ₹).
37. 37.What is the difference between the compound interest and the simple interest on ₹23600 at 5% per year for 2 years (in ₹)?
38. 38.What amount will ₹32000 grow to in 3 years at 15% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹59600 at 25% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹23000 at 15% per year for 1 year, compounded every year (in ₹).

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