Hannah and Caden just had business cards made. Hannah's printing company charged a one-time setup fee of $20 and then $7 per box of cards. Caden, meanwhile, ordered his online. They cost $17 per box. There was no setup fee, but he had to pay $10 to have his order shipped to his house. By coincidence, Hannah and Caden ended up spending the same amount on their business cards. How many boxes did each buy? How much did each spend?