Answer:
Effect on income= $6,200 increase
Step-by-step explanation:
Because it is a special offer, and there is unused capacity, we will not take into account the fixed costs:
Total unitary variable cost= 12 + 1= $13
Selling price per unit= $15
To calculate the effect on income, we need to use the following formula:
Effect on income= number of units*unitary contribution margin
Effect on income= 3,100*(15 - 13)
Effect on income= $6,200 increase