Question: It costs $75 per day for each day that a construction crew is on site. The project manager determines that most activities can be crashed

It costs $75 per day for each day that a construction crew is on site. The project manager determines that most activities can be crashed and has listed the crashing costs next to the minimum time for each activity. Use this information to determine the lowest cost for this project. All times given are in days.

Activity	Normal Time	Minimum Time	Crash Cost ($/day)	Predecessor
A	10	6	$70	--
B	6	3	$40	--
C	2	2	--	B
D	4	2	$60	C
E	6	4	$80	A
F	8	5	$90	D, E

1750 1780 1720 1810

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