Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 746 · 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 amount will ₹9600 grow to in 2 years at 5% per year compound interest (in ₹)?
2. 2.A town has 49500 people. The population grows by 12% every year. What will the population be after 1 year?
3. 3.Find the compound interest on ₹23500 at 20% per year for 3 years, compounded every year (in ₹).
4. 4.Find the compound interest on ₹45000 at 4% per year for 2 years, compounded every year (in ₹).
5. 5.What is the difference between the compound interest and the simple interest on ₹57200 at 15% per year for 2 years (in ₹)?
6. 6.What amount will ₹15000 grow to in 2 years at 8% per year compound interest (in ₹)?
7. 7.What amount will ₹17500 grow to in 3 years at 20% per year compound interest (in ₹)?
8. 8.What is the difference between the compound interest and the simple interest on ₹12400 at 25% per year for 2 years (in ₹)?
9. 9.Find the compound interest on ₹20200 at 15% per year for 1 year, compounded every year (in ₹).
10. 10.A town has 35200 people. The population grows by 25% every year. What will the population be after 1 year?
11. 11.A town has 43400 people. The population grows by 10% every year. What will the population be after 2 years?
12. 12.Find the compound interest on ₹40800 at 20% per year for 2 years, compounded every year (in ₹).
13. 13.Find the compound interest on ₹7500 at 4% per year for 2 years, compounded every year (in ₹).
14. 14.Find the compound interest on ₹32000 at 5% per year for 3 years, compounded every year (in ₹).
15. 15.A town has 57000 people. The population grows by 10% every year. What will the population be after 3 years?
16. 16.A town has 16900 people. The population grows by 8% every year. What will the population be after 1 year?
17. 17.What is the difference between the compound interest and the simple interest on ₹22500 at 4% per year for 2 years (in ₹)?
18. 18.What amount will ₹42000 grow to in 2 years at 10% per year compound interest (in ₹)?
19. 19.What is the difference between the compound interest and the simple interest on ₹55000 at 4% per year for 2 years (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹53100 at 20% per year for 2 years (in ₹)?
21. 21.What is the difference between the compound interest and the simple interest on ₹54200 at 20% per year for 2 years (in ₹)?
22. 22.A town has 29800 people. The population grows by 10% every year. What will the population be after 1 year?
23. 23.A town has 8000 people. The population grows by 5% every year. What will the population be after 3 years?
24. 24.What is the difference between the compound interest and the simple interest on ₹28100 at 20% per year for 2 years (in ₹)?
25. 25.What is the difference between the compound interest and the simple interest on ₹4900 at 10% per year for 2 years (in ₹)?
26. 26.What is the difference between the compound interest and the simple interest on ₹42500 at 12% per year for 2 years (in ₹)?
27. 27.What amount will ₹36900 grow to in 1 year at 10% per year compound interest (in ₹)?
28. 28.What amount will ₹10000 grow to in 2 years at 8% per year compound interest (in ₹)?
29. 29.What amount will ₹53500 grow to in 1 year at 15% per year compound interest (in ₹)?
30. 30.A town has 9900 people. The population grows by 20% every year. What will the population be after 1 year?
31. 31.A town has 2000 people. The population grows by 10% every year. What will the population be after 2 years?
32. 32.Find the compound interest on ₹37600 at 5% per year for 2 years, compounded every year (in ₹).
33. 33.Find the compound interest on ₹15100 at 8% per year for 1 year, compounded every year (in ₹).
34. 34.What is the difference between the compound interest and the simple interest on ₹15000 at 8% per year for 2 years (in ₹)?
35. 35.Find the compound interest on ₹47800 at 8% per year for 1 year, compounded every year (in ₹).
36. 36.What amount will ₹3200 grow to in 2 years at 5% per year compound interest (in ₹)?
37. 37.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
38. 38.What is the difference between the compound interest and the simple interest on ₹37500 at 8% per year for 2 years (in ₹)?
39. 39.A scooter is worth ₹17600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
40. 40.What is the difference between the compound interest and the simple interest on ₹45000 at 12% per year for 2 years (in ₹)?

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