_If difference in costs is $32000 and slope coefficient is 0.40, then difference in machine hours would be$?

_If difference in costs is $32000 and slope coefficient is 0.40, then

1.	_If difference in costs is $32000 and slope coefficient is 0.40, then difference in machine hours would be$?
A.	$80,000
B.	$12,800
C.	$70,000
D.	$22,800
Answer» B. $12,800