Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 102 · 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 ₹39000 at 20% per year for 2 years, compounded every year (in ₹).
2. 2.What amount will ₹32800 grow to in 2 years at 25% per year compound interest (in ₹)?
3. 3.What amount will ₹58500 grow to in 1 year at 8% per year compound interest (in ₹)?
4. 4.Find the compound interest on ₹9400 at 10% per year for 2 years, compounded every year (in ₹).
5. 5.A town has 24300 people. The population grows by 20% every year. What will the population be after 2 years?
6. 6.A scooter is worth ₹14900. Its value falls by 10% every year. What will it be worth after 2 years (in ₹)?
7. 7.What is the difference between the compound interest and the simple interest on ₹20800 at 5% per year for 2 years (in ₹)?
8. 8.A town has 22800 people. The population grows by 10% every year. What will the population be after 1 year?
9. 9.What amount will ₹7500 grow to in 2 years at 4% per year compound interest (in ₹)?
10. 10.What amount will ₹45200 grow to in 2 years at 15% per year compound interest (in ₹)?
11. 11.A scooter is worth ₹15000. Its value falls by 4% every year. What will it be worth after 2 years (in ₹)?
12. 12.What amount will ₹49500 grow to in 1 year at 20% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹40000 at 5% per year for 2 years (in ₹)?
14. 14.What amount will ₹3000 grow to in 3 years at 10% per year compound interest (in ₹)?
15. 15.A scooter is worth ₹4900. Its value falls by 20% every year. What will it be worth after 2 years (in ₹)?
16. 16.What amount will ₹8000 grow to in 3 years at 15% per year compound interest (in ₹)?
17. 17.Find the compound interest on ₹16000 at 15% per year for 1 year, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
19. 19.What amount will ₹26100 grow to in 1 year at 25% per year compound interest (in ₹)?
20. 20.Find the compound interest on ₹51600 at 12% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹3700 at 20% per year for 2 years (in ₹)?
22. 22.Find the compound interest on ₹15000 at 12% per year for 2 years, compounded every year (in ₹).
23. 23.A town has 31200 people. The population grows by 5% every year. What will the population be after 2 years?
24. 24.Find the compound interest on ₹17600 at 20% per year for 1 year, compounded every year (in ₹).
25. 25.Find the compound interest on ₹39200 at 25% per year for 2 years, compounded every year (in ₹).
26. 26.A scooter is worth ₹40800. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
27. 27.What amount will ₹12000 grow to in 1 year at 15% per year compound interest (in ₹)?
28. 28.What is the difference between the compound interest and the simple interest on ₹44800 at 20% per year for 2 years (in ₹)?
29. 29.Find the compound interest on ₹26100 at 20% per year for 1 year, compounded every year (in ₹).
30. 30.What amount will ₹56400 grow to in 2 years at 15% per year compound interest (in ₹)?
31. 31.What is the difference between the compound interest and the simple interest on ₹55000 at 12% per year for 2 years (in ₹)?
32. 32.What amount will ₹59000 grow to in 1 year at 15% per year compound interest (in ₹)?
33. 33.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
34. 34.What amount will ₹48000 grow to in 2 years at 5% per year compound interest (in ₹)?
35. 35.Find the compound interest on ₹10100 at 15% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹11600 grow to in 1 year at 8% per year compound interest (in ₹)?
37. 37.Find the compound interest on ₹5800 at 8% per year for 1 year, compounded every year (in ₹).
38. 38.What amount will ₹9500 grow to in 1 year at 10% per year compound interest (in ₹)?
39. 39.What is the difference between the compound interest and the simple interest on ₹3200 at 5% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹35600 at 15% per year for 2 years, compounded every year (in ₹).

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