A shoe store is having a sale where each pair of shoes is sold for the same price and each pair of sandals is sold for the same price. Gloria purchased 4 pairs of shoes and 3 pairs of sandals for $79.5 Felicia purchased 5 pairs of shoes and 2 pairs of sandals for $84.50. Write a system of linear equations representing this scenario, and solve the system to find the cost of each pair of shoes and the cost of each pair of sandals.