Joanne bought 3 baseball cards for $160. If the first card was as expensive as the combined price of the second and the third cards, and the second card cost $20 more than the third card, what is the price of the first card?
3 baseball cards = $160 first card + (second card + third card) = $160 first card = second card + third card $160 ÷ 2 = $80 thus the first card was $80
