Answer:
"$1.75" is the appropriate approach.
Explanation:
The given values are:
Rate variance
= $310 (unfavorable)
Actual maintenance costs
= $10,110
Machine hours
= 5,600
Now,
⇒ [tex]Rate \ variance=(5600\times Standard \ maintenance \ cost \ per \ machine \ hour)-(Actual \ maintenance \ cost)[/tex]
On substituting the values, we get
⇒ [tex]-310=(5600\times Standard \ maintenance \ cost \ per \ machine \ hour)-10110[/tex]
⇒ [tex]Standard \ maintenance \ cost \ per \ machine \ hour=\frac{10110-310}{5600}[/tex]
⇒ [tex]=\frac{9,800}{5600}[/tex]
⇒ [tex]=1.75[/tex] ($)