Hillary is buying Halloween candy for the trick-or-treaters in her neighborhood. She bought 6 bags of miniature candy bars and 2 bags of lollipops for $42. Jack bought 5 bags of miniatures and 3 bags of lollipops at the same store for $37. Write a system of linear equations representing this scenario, and solve the system to find the cost of each bag of miniatures and the cost of each bag of lollipops.