Josiah is taking his friends to the movies. Each ticket cost $10, and popcorn is $5 a bag. There is a $3 service fee for the entire purchase. He has $75. He buys 4 tickets, and wants to figure out the

Josiah is taking his friends to the movies. Each ticket cost $10, and popcorn is $5 a bag. There is a $3 service fee for the entire purchase. He has $75. He buys 4 tickets, and wants to figure out the maximum number of bags of popcorn he can buy.