18.975÷5.5÷3=1.15(公顷)
平均一台拖拉机每小时耕地1.15公顷
三台拖拉机5.5小时耕地18.975公顷.平均一台拖拉机每小时耕地多少公顷?
三台拖拉机5.5小时耕地18.975公顷.平均一台拖拉机每小时耕地多少公顷?
数学人气:687 ℃时间:2020-06-06 21:48:23
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