sat数学题（英语） Tom and Alison are both salespeople,Tom's weekly

sat数学题（英语） Tom and Alison are both salespeople,Tom's weekly compensation consists of $300 plus 20 percent of his sales.Alson's weekly compensation consists of $200 plus 25 percent of her sales.if they both bad the same amount of slaes and the same compensaton for a particular week what was that compensation in dollars.(Disregard the dollar sign when gridding your answer)