An old house in boxerville measures 30 feet in height and has windows 5 feet width. an architecture student builds a proportional model that is 3 feet high. how wide are the models windows, in feet?

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?