Answer
The flexible budget variance is the difference between actual results and the flexible budget (flexed to actual activity). It captures price/rate and efficiency differences—the controllable performance—separate from the sales-volume variance, which is the difference between the flexible and the static budget.
Actual cost 82k vs flexed budget 80k = 2k adverse flexible budget variance.Real-world example The flexible-budget variance shows how spending differed from what was allowed at the actual volume.