Neocomfort Corporation manufactured 3000 chairs during June. The following variable overhead data relates to June: What is the variable overhead flexible-budget variance?

Budgeted variable overhead cost per unit	$17,000
Actual variable manufacturing overhead cost	$52,000
Flexible-budget amount for variable manufacturing overhead	$47,100
Variable manufacturing overhead efficiency variance	$710 unfavorable

What is the variable overhead flexible-budget variance?