Answer:
(B) $18.40
Step-by-step 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:
![\left \{ {{33.8=VMO + FMO/3,000} \atop {64.6=VMO + FMO/1,000}} \right.](https://img.qammunity.org/2020/formulas/business/college/cbesaicm8l79n9ymjcx2w8ze2lhztv3wek.png)
We rearrange:
![\left \{ {{FMO = (33.8-VMO) * 3,000} \atop {FMO = (64.6-VMO) * 1,000}} \right.](https://img.qammunity.org/2020/formulas/business/college/9y496u3ogdwe1ne0wh2n3x4io164haubrh.png)
We equalize:
![(33.8-VMO) * 3,000 = (64.6-VMO) * 1,000](https://img.qammunity.org/2020/formulas/business/college/iyf8lf7zvb2sndbprj9rkuop34ch1ltpz5.png)
And now we solve:
(33.8 - VMO) x 3 = 64.6 - VMO
101.4 - 3 VMO = 64.6 - VMO
36.8 = 2VMO = 18.4