Bruce is planning on selling sandwiches in class for $5 each. Food costs are $4. He will also need to buy an insulated cooler to store the sandwiches. This cooler costs $10. Bruce needs to make a profit of $25 to make it worth his while. How many sandwiches does Bruce need to sell to make the project worthwhile?
I believe the answer is 35 because each sandwich makes a $1 profit. $10 would pay for the cooler (aka ten sandwiches). To make $25 profit he would have to sell 25 more sandwiches, so he would sell 35 sandwiches.
