Some students want to start a business that cleans and polishes cars. It takes 1.5 hours of labor and cost $ 2.25 in supplies to clean a car. It takes 2 hours of labor and cost $1,5 in supplies to polish a car. The students can work a total of 120 hours 1 week. They also decide that they want to spend more than $135 per week on supplies. The students expect to make a profit of $7.75 for each car that they clean and a profit of $8.50 for each car that they polish. What is the maximum profit the students can make?
They can do more money , it depends of the supplies they buy . There are many shops from where they could buy the supplies cheaper. For example i know about greasemonkeydirect.com It is an online workshop & garage supplies . They have free UK delivery , so the students can buy everything from here, and also any air fresheners and resell them . You can polish a car and ask the driver if he need an air freshener and sell it more expensive