Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 18 · 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.What is the difference between the compound interest and the simple interest on ₹22500 at 12% per year for 2 years (in ₹)?
2. 2.What is the difference between the compound interest and the simple interest on ₹20000 at 25% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹36000 at 10% per year for 3 years, compounded every year (in ₹).
4. 4.What amount will ₹38200 grow to in 1 year at 20% per year compound interest (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹50300 at 20% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹52700 at 20% per year for 2 years (in ₹)?
7. 7.A scooter is worth ₹2900. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹45800 at 10% per year for 2 years (in ₹)?
9. 9.A town has 60000 people. The population grows by 12% every year. What will the population be after 2 years?
10. 10.Find the compound interest on ₹54100 at 25% per year for 1 year, compounded every year (in ₹).
11. 11.What is the difference between the compound interest and the simple interest on ₹18400 at 25% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹39600 at 8% per year for 1 year, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹20000 at 8% per year for 2 years (in ₹)?
14. 14.A town has 26200 people. The population grows by 20% every year. What will the population be after 1 year?
15. 15.What is the difference between the compound interest and the simple interest on ₹36200 at 20% per year for 2 years (in ₹)?
16. 16.A town has 14300 people. The population grows by 10% every year. What will the population be after 2 years?
17. 17.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
18. 18.What amount will ₹8500 grow to in 1 year at 8% per year compound interest (in ₹)?
19. 19.A town has 23200 people. The population grows by 15% every year. What will the population be after 2 years?
20. 20.What is the difference between the compound interest and the simple interest on ₹15000 at 12% per year for 2 years (in ₹)?
21. 21.A town has 27700 people. The population grows by 5% every year. What will the population be after 1 year?
22. 22.Find the compound interest on ₹10000 at 10% per year for 3 years, compounded every year (in ₹).
23. 23.What is the difference between the compound interest and the simple interest on ₹14400 at 25% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹36800 at 25% per year for 3 years, compounded every year (in ₹).
25. 25.A town has 54000 people. The population grows by 15% every year. What will the population be after 2 years?
26. 26.What is the difference between the compound interest and the simple interest on ₹6000 at 15% per year for 2 years (in ₹)?
27. 27.A town has 12800 people. The population grows by 5% every year. What will the population be after 2 years?
28. 28.Find the compound interest on ₹21200 at 5% per year for 1 year, compounded every year (in ₹).
29. 29.A town has 15200 people. The population grows by 5% every year. What will the population be after 2 years?
30. 30.A scooter is worth ₹19100. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
31. 31.What amount will ₹2400 grow to in 2 years at 5% per year compound interest (in ₹)?
32. 32.What amount will ₹4400 grow to in 1 year at 20% per year compound interest (in ₹)?
33. 33.A scooter is worth ₹42400. Its value falls by 12% every year. What will it be worth after 1 year (in ₹)?
34. 34.What is the difference between the compound interest and the simple interest on ₹19200 at 5% per year for 2 years (in ₹)?
35. 35.What is the difference between the compound interest and the simple interest on ₹42000 at 5% per year for 2 years (in ₹)?
36. 36.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
37. 37.Find the compound interest on ₹55200 at 15% per year for 1 year, compounded every year (in ₹).
38. 38.Find the compound interest on ₹24800 at 5% per year for 1 year, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹42400 at 10% per year for 2 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹5500 at 10% per year for 2 years (in ₹)?

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