Answer:
0.25 pound
Explanation:
It is ratio problem. We can also observe that it is a direct ratio because logically less amount of seed will cover less square feet.
We can construct the scheme:
5 pound___________20 square feet
x pound____________1 square foot
It is logical since 1 square foot is less than 20 and the corresponding answer (0.25) is also less than 5 pound.