Use this info for questions $14-19.$

Determine the lowest cost plan for crashing this project by six periods.

What is the expected project duration before crashing any activities?

$\backslash$table$[[$Activity$,$Normal Time,Possible Crashes,Crash Cost Per Day$],[$A$,4,1,205],[$B$,11,3,98],[$C$,12,2,74],[$D$,7,1,63],[$E$,8,3,87],[$F$,6,1,56]]$

$15.$ List every path in the network diagram from Question $14$ along with their lengths

$16.$ What is the cost of the first crash for the project.

$17.$ What is the cost of the third crash?

$18.$ What is the cost of the $5$th crash?

$19.$ What is the total cost by $6$ periods $?$