0.11 acres can be planted per pound of seed
Solution:
Given that it takes 63 pounds of seed to completely plant a 7 acre field
To find: acres can be planted per pound of seed
Let "x" be the acres which can be planted per pound of seed
Therefore, from given question,
63 pounds of seed = 7 acre field
1 pound of seed = "x" acre field
This forms a proportion and we can solve the sum by cross multiplying
Multiply the numerator of the left-hand fraction by the denominator of the right-hand fraction
Multiply the numerator of the right-hand fraction by the denominator of the left-hand fraction
Set the two products equal to each other
Solve for the variable

Thus 0.11 acres can be planted per pound of seed