Answer:
Sales activity variance = $33,900 favorable
Step-by-step explanation:
Sales activity variance is the amount by which budgeted profit would reduced or increased as result of budgeted sales volume been different from actual sales volume
Sales activity variance
Units
Budgeted sales units 226,700
Actual sales units 231,700
5000 favorable
Standard contribution per unit(WK) ×$6.78
Sales activity variance $33,900 favorable
Sales activity variance = $33,900 favorable
Working Notes
Standard contribution = standard selling price - standard variable cost
= $10.7 - $3.92= $6.78