Austin company allocates manufacturing overhead based on machine hours. each chair produced should require 4 machine hours. standard variable cost per machine hour is $5.40. during january, austin company actually used 2,100 machine hours to make 510 chairs. the company spent $11,130 in variable manufacturing overhead costs and $9,100 in fixed manufacturing overhead costs. what is the variable overhead efficiency variance?

$114 unfavorable variance

Explanation:

Austin produced 510 chairs:

estimated machine hours                          actual machine hours

    2,040 hours                                                       2,100

estimated variable overhead                   actual variable overhead

   $11,016                                                               $11,130

the variable overhead efficiency variance is $11,016 - $11,130 = -$114

a negative number means that the variable variance is $114 unfavorable

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