Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 381 · 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.Find the compound interest on ₹46200 at 4% per year for 1 year, compounded every year (in ₹).
2. 2.A town has 15300 people. The population grows by 15% every year. What will the population be after 1 year?
3. 3.What is the difference between the compound interest and the simple interest on ₹40000 at 12% per year for 2 years (in ₹)?
4. 4.What is the difference between the compound interest and the simple interest on ₹32500 at 12% per year for 2 years (in ₹)?
5. 5.Find the compound interest on ₹45000 at 12% per year for 2 years, compounded every year (in ₹).
6. 6.A town has 8400 people. The population grows by 5% every year. What will the population be after 2 years?
7. 7.Find the compound interest on ₹48000 at 5% per year for 3 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹40800 at 15% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹22200 at 10% per year for 2 years, compounded every year (in ₹).
10. 10.A scooter is worth ₹42400. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
11. 11.Find the compound interest on ₹22000 at 10% per year for 3 years, compounded every year (in ₹).
12. 12.What is the difference between the compound interest and the simple interest on ₹32000 at 10% per year for 2 years (in ₹)?
13. 13.A town has 38000 people. The population grows by 10% every year. What will the population be after 2 years?
14. 14.What is the difference between the compound interest and the simple interest on ₹25000 at 4% per year for 2 years (in ₹)?
15. 15.A scooter is worth ₹46800. Its value falls by 20% every year. What will it be worth after 1 year (in ₹)?
16. 16.What amount will ₹16000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.What is the difference between the compound interest and the simple interest on ₹2800 at 5% per year for 2 years (in ₹)?
18. 18.A scooter is worth ₹39100. Its value falls by 15% every year. What will it be worth after 1 year (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹53200 at 5% per year for 2 years (in ₹)?
20. 20.Find the compound interest on ₹10600 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.Find the compound interest on ₹12500 at 12% per year for 2 years, compounded every year (in ₹).
22. 22.What is the difference between the compound interest and the simple interest on ₹56800 at 15% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
24. 24.What is the difference between the compound interest and the simple interest on ₹13100 at 20% per year for 2 years (in ₹)?
25. 25.What amount will ₹16800 grow to in 2 years at 15% per year compound interest (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹24400 at 15% per year for 2 years (in ₹)?
27. 27.What amount will ₹9500 grow to in 1 year at 12% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹34000 at 5% per year for 2 years (in ₹)?
29. 29.A town has 55000 people. The population grows by 12% every year. What will the population be after 2 years?
30. 30.What amount will ₹56000 grow to in 3 years at 5% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹43600 at 15% per year for 2 years (in ₹)?
32. 32.What is the difference between the compound interest and the simple interest on ₹57200 at 5% per year for 2 years (in ₹)?
33. 33.What amount will ₹22200 grow to in 2 years at 10% per year compound interest (in ₹)?
34. 34.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
35. 35.What amount will ₹38400 grow to in 2 years at 25% per year compound interest (in ₹)?
36. 36.What is the difference between the compound interest and the simple interest on ₹54800 at 5% per year for 2 years (in ₹)?
37. 37.A town has 38400 people. The population grows by 15% every year. What will the population be after 2 years?
38. 38.What is the difference between the compound interest and the simple interest on ₹5000 at 8% per year for 2 years (in ₹)?
39. 39.Find the compound interest on ₹59000 at 10% per year for 3 years, compounded every year (in ₹).
40. 40.What amount will ₹51300 grow to in 1 year at 15% per year compound interest (in ₹)?

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