To

From A B C D E F

A $-$

$8070504045$

B $-$

$55603065$

C $-$

$35510$

D $-$

$5075$

E $-$

$5$

F $-$

A law firm has its offices arranged according to the following layout:

A C E

B D F

The office manager for the law firm estimates that the following number of trips are made daily between offices.

Part $2$

a$.$ Assuming that it costs $$11/$unitary distance, the load$-$distance cost of the layout is$?$