They will have to pay a $42 increase so a total of $742.
Answer:
Step-by-step explanation:
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Price per box, P = $1.45 .
Money left, M = $1247 - $472.70 = $774.3 .
Let, number of boxes are x.
So,

Therefore, they have to sell 534 more boxes.
Hence, this is the required solution.
The answer is 33 because 40*0.825 or 40*82.5% is 33 men.