We can say that the new box will cost less than the original box because of the inequality sign.
Let one original box be denoted as x.
We are told that cost of 35 original boxes is $21.
Thus;
35x = $21
Now, since he wants the cost of the new box to be less than or equal to the cost of the original box, it means that the inequality is;
35x ≤ 21
Thus, we can say that the new box will cost less than the original box per unit.
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