Answer:
72
Explanation:
You want to know the difference in the number of bushels computed for 8640 ears of corn when 40 ears/bushel are used in the computation instead of 60 ears/bushel.
Bushels
At 40 ears per bushel, Nathaniel has ...
(8640 ears)/(40 ears/bushel) = 216 bushels
At 60 ears per bushel, Nathaniel has ...
(8640 ears)/(60 ears/bushel) = 144 bushels
Using 40 ears/bushel, Nathaniel has ...
216 -144 = 72 . . . . more bushels
Nathaniel has 72 more bushes of corn if he uses 40 ears/bushel as is measurement.
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