Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 232 · 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 9300 people. The population grows by 10% every year. What will the population be after 1 year?
2. 2.What is the difference between the compound interest and the simple interest on ₹40000 at 4% per year for 2 years (in ₹)?
3. 3.Find the compound interest on ₹17500 at 8% per year for 2 years, compounded every year (in ₹).
4. 4.What is the difference between the compound interest and the simple interest on ₹47600 at 5% per year for 2 years (in ₹)?
5. 5.What is the difference between the compound interest and the simple interest on ₹43200 at 25% per year for 2 years (in ₹)?
6. 6.What is the difference between the compound interest and the simple interest on ₹35000 at 8% per year for 2 years (in ₹)?
7. 7.Find the compound interest on ₹49800 at 20% per year for 2 years, compounded every year (in ₹).
8. 8.What is the difference between the compound interest and the simple interest on ₹48300 at 10% per year for 2 years (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹27500 at 12% per year for 2 years (in ₹)?
10. 10.What amount will ₹59800 grow to in 1 year at 4% per year compound interest (in ₹)?
11. 11.What is the difference between the compound interest and the simple interest on ₹38400 at 25% per year for 2 years (in ₹)?
12. 12.Find the compound interest on ₹54100 at 25% per year for 1 year, compounded every year (in ₹).
13. 13.What amount will ₹54100 grow to in 1 year at 15% per year compound interest (in ₹)?
14. 14.What amount will ₹32000 grow to in 3 years at 5% per year compound interest (in ₹)?
15. 15.What amount will ₹17500 grow to in 1 year at 5% per year compound interest (in ₹)?
16. 16.Find the compound interest on ₹57500 at 8% per year for 2 years, compounded every year (in ₹).
17. 17.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
18. 18.What amount will ₹36300 grow to in 1 year at 5% per year compound interest (in ₹)?
19. 19.Find the compound interest on ₹49000 at 8% per year for 1 year, compounded every year (in ₹).
20. 20.Find the compound interest on ₹19700 at 10% per year for 1 year, compounded every year (in ₹).
21. 21.What is the difference between the compound interest and the simple interest on ₹2500 at 4% per year for 2 years (in ₹)?
22. 22.What amount will ₹30400 grow to in 3 years at 25% per year compound interest (in ₹)?
23. 23.Find the compound interest on ₹3200 at 20% per year for 2 years, compounded every year (in ₹).
24. 24.Find the compound interest on ₹20700 at 20% per year for 1 year, compounded every year (in ₹).
25. 25.What is the difference between the compound interest and the simple interest on ₹30400 at 10% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹37100 at 20% per year for 2 years (in ₹)?
27. 27.What amount will ₹48900 grow to in 1 year at 4% per year compound interest (in ₹)?
28. 28.Find the compound interest on ₹29700 at 20% per year for 2 years, compounded every year (in ₹).
29. 29.What is the difference between the compound interest and the simple interest on ₹10000 at 10% per year for 2 years (in ₹)?
30. 30.Find the compound interest on ₹39900 at 4% per year for 1 year, compounded every year (in ₹).
31. 31.Find the compound interest on ₹53300 at 15% per year for 1 year, compounded every year (in ₹).
32. 32.What is the difference between the compound interest and the simple interest on ₹30000 at 4% per year for 2 years (in ₹)?
33. 33.A town has 25000 people. The population grows by 8% every year. What will the population be after 2 years?
34. 34.What amount will ₹8100 grow to in 1 year at 5% per year compound interest (in ₹)?
35. 35.A town has 56000 people. The population grows by 12% every year. What will the population be after 1 year?
36. 36.Find the compound interest on ₹3600 at 25% per year for 2 years, compounded every year (in ₹).
37. 37.What amount will ₹33600 grow to in 2 years at 15% per year compound interest (in ₹)?
38. 38.What amount will ₹39000 grow to in 3 years at 10% per year compound interest (in ₹)?
39. 39.A town has 14400 people. The population grows by 25% every year. What will the population be after 2 years?
40. 40.A town has 12100 people. The population grows by 10% every year. What will the population be after 1 year?

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