Maria and emily are selling flower bulbs for a school fundraiser. customers can buy bags of windflower bulbs and packages of crocus bulbs. maria sold 2 bags of windflower bulbs and 8 packages of crocus bulbs for a total of $136. emily sold 10 bags of windflower bulbs and 4 packages of crocus bulbs for a total of $140. what is the cost each of one bag of windflower bulbs and one package of crocus bulbs