Since the amount of money given for materials is 2.50 $, and labor cost is 3.00 $ so it’s overall 5.50 $.
It will be sold for 8.00 $ and %30 of this amount will be reducted as direct labor costs, so only %70 of the price can be accessed. So %70 of the amount corresponds to 5.60 $. Since the overall cost was 5.50 $ and the net amount of sales is 5.60, 0.10 $ will be realized from this sale.