Answer:
53 boxes
Explanation:
1.80*30/100= 180/100*30/100=0.54
1.80-0.54= 1.26$
1.26*6/100= 126/100*6/100 = 0.0756
1.26+0.0756=1.33
1.33/40 =133/100* 40= 5320/100 = 53.20
~= 53 boxes
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