中国建设银行
一项工程由甲、乙两队合作30天可以完成。若甲单独做24天后乙队加入,两队合作l0天后,甲队被调走,乙队继续做了l7天才能完成,则这项工程由甲、乙两队单独完成各需多少天?
A.52、70.5
B.52.5、70
C.70、52.5
D.70.5、52
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