2x(1/6+1/4)
=2x5/12
=5/6
答:甲乙两人合打了2天,完成了这部书稿的[六分之五]
一部书稿,甲单独要打6天完成,乙单独要打4天完成,甲乙两人合打了2天,完成了这部书稿的[]
一部书稿,甲单独要打6天完成,乙单独要打4天完成,甲乙两人合打了2天,完成了这部书稿的[]
其他人气:218 ℃时间:2020-04-11 02:29:01
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