Astore sells a package of 12 trading cards for $4.92. explain how you can tell the price per card is less than $1. what is the unit price per card?

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?