Charlotte is a dog walker and is creating a schedule for all of her clients this week. Each dog is walked separately. On Monday, she needs to walk 4 poodles and 2 Chihuahuas. On Tuesday, she walks the same amount of Chihuahuas but isn't sure how many poodles she should walk. On Wednesday, she walks 4 Labradors. It takes 2 hours to walk a poodle, 1 hour to walk a Chihuahua, and 3 hours to walk a Labrador. If she has time for a total of 32 hours spent in dog-walking this week, how many poodles can Charlotte walk on Tuesday?
Please reason step by step, and put your final answer within \boxed{}.
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