Question 1112652
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When the problem comes formulated in this way,  it may  (and should)  perplex a reader.


It is because its formulation is  INCOMPLETE.


To be complete,  the problem must say if the box is open  (without the lid)  or closed  (with the lid).


But,  it looks like,  this  Math composer doesn't bother with such details.



Therefore,  the problem looks like a lame horse.