Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 454 · 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 ₹56100 grow to in 1 year at 8% per year compound interest (in ₹)?
2. 2.What amount will ₹15000 grow to in 3 years at 10% per year compound interest (in ₹)?
3. 3.A town has 40000 people. The population grows by 5% every year. What will the population be after 3 years?
4. 4.What is the difference between the compound interest and the simple interest on ₹6400 at 15% per year for 2 years (in ₹)?
5. 5.What amount will ₹28800 grow to in 1 year at 5% per year compound interest (in ₹)?
6. 6.What amount will ₹50500 grow to in 3 years at 20% per year compound interest (in ₹)?
7. 7.Find the compound interest on ₹41600 at 25% per year for 3 years, compounded every year (in ₹).
8. 8.What amount will ₹10100 grow to in 1 year at 4% per year compound interest (in ₹)?
9. 9.What is the difference between the compound interest and the simple interest on ₹5000 at 4% per year for 2 years (in ₹)?
10. 10.A town has 30000 people. The population grows by 4% every year. What will the population be after 2 years?
11. 11.What amount will ₹3600 grow to in 2 years at 5% per year compound interest (in ₹)?
12. 12.What amount will ₹31200 grow to in 2 years at 15% per year compound interest (in ₹)?
13. 13.What is the difference between the compound interest and the simple interest on ₹51200 at 5% per year for 2 years (in ₹)?
14. 14.What amount will ₹51300 grow to in 1 year at 12% per year compound interest (in ₹)?
15. 15.Find the compound interest on ₹14400 at 25% per year for 3 years, compounded every year (in ₹).
16. 16.What is the difference between the compound interest and the simple interest on ₹5000 at 12% per year for 2 years (in ₹)?
17. 17.Find the compound interest on ₹32000 at 15% per year for 3 years, compounded every year (in ₹).
18. 18.What is the difference between the compound interest and the simple interest on ₹18500 at 10% per year for 2 years (in ₹)?
19. 19.A scooter is worth ₹54400. Its value falls by 25% every year. What will it be worth after 1 year (in ₹)?
20. 20.What is the difference between the compound interest and the simple interest on ₹36000 at 20% per year for 2 years (in ₹)?
21. 21.What amount will ₹57500 grow to in 2 years at 4% per year compound interest (in ₹)?
22. 22.What is the difference between the compound interest and the simple interest on ₹4400 at 15% per year for 2 years (in ₹)?
23. 23.Find the compound interest on ₹5400 at 25% per year for 1 year, compounded every year (in ₹).
24. 24.A town has 19000 people. The population grows by 10% every year. What will the population be after 2 years?
25. 25.Find the compound interest on ₹57600 at 10% per year for 1 year, compounded every year (in ₹).
26. 26.What is the difference between the compound interest and the simple interest on ₹5600 at 5% per year for 2 years (in ₹)?
27. 27.Find the compound interest on ₹5000 at 4% per year for 2 years, compounded every year (in ₹).
28. 28.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
29. 29.Find the compound interest on ₹35000 at 12% per year for 2 years, compounded every year (in ₹).
30. 30.What amount will ₹9200 grow to in 2 years at 25% per year compound interest (in ₹)?
31. 31.Find the compound interest on ₹31200 at 15% per year for 2 years, compounded every year (in ₹).
32. 32.Find the compound interest on ₹35000 at 4% per year for 2 years, compounded every year (in ₹).
33. 33.What amount will ₹40000 grow to in 3 years at 25% per year compound interest (in ₹)?
34. 34.Find the compound interest on ₹15000 at 10% per year for 3 years, compounded every year (in ₹).
35. 35.A town has 4900 people. The population grows by 15% every year. What will the population be after 1 year?
36. 36.Find the compound interest on ₹17700 at 5% per year for 1 year, compounded every year (in ₹).
37. 37.Find the compound interest on ₹54100 at 10% per year for 1 year, compounded every year (in ₹).
38. 38.A scooter is worth ₹32000. Its value falls by 15% every year. What will it be worth after 3 years (in ₹)?
39. 39.Find the compound interest on ₹5200 at 5% per year for 2 years, compounded every year (in ₹).
40. 40.What amount will ₹46100 grow to in 1 year at 20% per year compound interest (in ₹)?

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