The Environmental Club at a school has decided to plant bulbs, bushes, and trees in the spring. Each hallway has a flatbed for d
onated plants and bulbs. Hallway A has 1/10 bulbs, 2/10 small bushes and 7/10 tree seedlings. Hallway B has 2/10 bulbs 1/10 small bushes and 7/10 tree seedlings. How many flatbeds of tree seedling are there?