Answer:
(B) $18.40
Explanation:
we build the equation system and solve for variable overhead
we must understand that overhead unit cost if calculate as follow:
variable overhead + fixed overhead / volume
so:
[tex]\left \{ {{33.8=VMO + FMO/3,000} \atop {64.6=VMO + FMO/1,000}} \right.[/tex]
We rearrange:
[tex]\left \{ {{FMO = (33.8-VMO) \times 3,000} \atop {FMO = (64.6-VMO) \times 1,000}} \right.[/tex]
We equalize:
[tex] (33.8-VMO) \times 3,000 = (64.6-VMO) \times 1,000[/tex]
And now we solve:
(33.8 - VMO) x 3 = 64.6 - VMO
101.4 - 3 VMO = 64.6 - VMO
36.8 = 2VMO = 18.4