Consider the following process layout data for four departments $($A$,$ B$,$ C$,$ and D$)$ and four areas $(1,2,3,$ and $4)$:

From$/$To $1234$

$1-50100150$

$2-50100$

$3-50$

$4-$

From$/$To A B C D

A $-602010$

B $40-3080$

C $5030-70$

D $1010090-$

What is the total flow between departments A and B$?$ Answer

What is the total flow between departments A and C$?$ Answer

What is the total flow between departments A and D$?$ Answer

What is the total flow between departments B and C$?$ Answer

What is the total flow between departments B and D$?$ Answer

What is the total flow between departments C and D$?$ Answer