Mandy has decided to sell pet rocks at an art fair for $5 each . she has paid $50 to rent a table at the fair and it cost her $2 to package each rock with set of instructions . for what number of sales will Mandy make a profit ?
If she sells 17 pet rocks She'll make $1 profit. Base cost of $50 for the table. She sells the rocks for $5 each but requires $2 per rock for packaging. Thus she makes $3 per rock she sells. 17 * 3 = 51