3台拖拉机9小时耕地0.486公顷，平均每台拖拉机每小时耕地多少公顷？7f7S-l2C+a5R9A1C.l7e*J3z
算式：提示8Y.A,g7A5{/|0}7f7S-l2C+a5R9A1C.l7e*J3z
答：平均每台拖拉机每小时耕地(H3A/c;e公顷7f7S-l2C+a5R9A1C.l7e*J3z