Answer:
Cost variance is $6,400 unfavorable
Step-by-step explanation:
Cost variance shows that how much under/over valued is the budget. It measures the difference of the actual cost incurred and the budgeted cost.
Earned value is the value of budgeted cost which is calculated using actual activity. It is the cost that should be incur on budgeted units.
Earned value can be calculated as follow:
Earned value = Actual Activity x Budgeted rate = $27,500 x $6 = $165,000
Formula for cost variance is as follow
Cost Variance = Earned Value - Actual Value
Cost Variance = $165,000 - $171,400
Cost Variance = -$6,400
It is an unfavorable variance because company incurred more cost than it should be.