$(1)15$:$42$

Schedule

Building A

X Can't happen first

Building B

Must happen before Building D

Building C

Must include the $12$th in the schedule

Building D

Must happen before Building A

uildings must be painted as soon as possible, one at a time. Each one takes $4$ days. The painters do not new job on Dagndays or work weekends. On which date should the work on Building A begin, to te all $4$ buildings as early as possible?

$\backslash$table$[[$Ir$,$MON,TUE,WED,THU,FRI,SAT$],[$UN$,2,3,4,5,6,],[7,8,9,10,11,12,13],[14,15,16,17,18,19,20],[21,22,23,24,25,26,27]]$

$10$ of $24$

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