Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 386 · 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 11400 people. The population grows by 10% every year. What will the population be after 1 year?
2. 2.What amount will ₹45300 grow to in 1 year at 25% per year compound interest (in ₹)?
3. 3.Find the compound interest on ₹55000 at 4% per year for 2 years, compounded every year (in ₹).
4. 4.A town has 30400 people. The population grows by 5% every year. What will the population be after 2 years?
5. 5.Find the compound interest on ₹9000 at 5% per year for 1 year, compounded every year (in ₹).
6. 6.A town has 4800 people. The population grows by 12% every year. What will the population be after 1 year?
7. 7.What is the difference between the compound interest and the simple interest on ₹2500 at 12% per year for 2 years (in ₹)?
8. 8.What amount will ₹58000 grow to in 1 year at 25% per year compound interest (in ₹)?
9. 9.Find the compound interest on ₹13400 at 5% per year for 1 year, compounded every year (in ₹).
10. 10.Find the compound interest on ₹12800 at 5% per year for 2 years, compounded every year (in ₹).
11. 11.What amount will ₹35400 grow to in 1 year at 5% per year compound interest (in ₹)?
12. 12.What is the difference between the compound interest and the simple interest on ₹7500 at 4% per year for 2 years (in ₹)?
13. 13.What amount will ₹19900 grow to in 1 year at 4% per year compound interest (in ₹)?
14. 14.Find the compound interest on ₹25000 at 20% per year for 3 years, compounded every year (in ₹).
15. 15.Find the compound interest on ₹48000 at 5% per year for 2 years, compounded every year (in ₹).
16. 16.What amount will ₹47500 grow to in 1 year at 25% per year compound interest (in ₹)?
17. 17.What amount will ₹24000 grow to in 3 years at 5% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹8800 at 25% per year for 2 years (in ₹)?
19. 19.What amount will ₹35000 grow to in 2 years at 8% per year compound interest (in ₹)?
20. 20.A town has 21600 people. The population grows by 15% every year. What will the population be after 1 year?
21. 21.Find the compound interest on ₹38300 at 4% per year for 1 year, compounded every year (in ₹).
22. 22.A town has 11400 people. The population grows by 4% every year. What will the population be after 1 year?
23. 23.What is the difference between the compound interest and the simple interest on ₹25000 at 12% per year for 2 years (in ₹)?
24. 24.Find the compound interest on ₹46100 at 5% per year for 1 year, compounded every year (in ₹).
25. 25.What amount will ₹29500 grow to in 1 year at 10% per year compound interest (in ₹)?
26. 26.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).
27. 27.A town has 50000 people. The population grows by 20% every year. What will the population be after 2 years?
28. 28.A town has 35600 people. The population grows by 25% every year. What will the population be after 1 year?
29. 29.What is the difference between the compound interest and the simple interest on ₹51200 at 20% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹53200 at 5% per year for 2 years, compounded every year (in ₹).
31. 31.What is the difference between the compound interest and the simple interest on ₹58600 at 20% per year for 2 years (in ₹)?
32. 32.What amount will ₹30000 grow to in 2 years at 12% per year compound interest (in ₹)?
33. 33.Find the compound interest on ₹7600 at 5% per year for 2 years, compounded every year (in ₹).
34. 34.Find the compound interest on ₹50000 at 8% per year for 2 years, compounded every year (in ₹).
35. 35.Find the compound interest on ₹5000 at 12% per year for 2 years, compounded every year (in ₹).
36. 36.What is the difference between the compound interest and the simple interest on ₹38400 at 25% per year for 2 years (in ₹)?
37. 37.Find the compound interest on ₹25000 at 12% per year for 2 years, compounded every year (in ₹).
38. 38.What is the difference between the compound interest and the simple interest on ₹19600 at 25% per year for 2 years (in ₹)?
39. 39.What amount will ₹34300 grow to in 1 year at 5% per year compound interest (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹26400 at 25% per year for 2 years (in ₹)?

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