A department store sells yellow and purple shirts. Each yellow shirt is the same price. Each purple shirt is the same price. However, the price of yellow shirts is different from the price of purple shirts.

On Monday, the store collected $165 selling 5 purple shirts and 7 yellow shirts.

On Tuesday, the store collected $213 selling 4 purple shirts and 11 yellow shirts.

What is the cost of each shirt?

please answer asap and preferably include work