అర్థమేటిక్ & రీజనింగ్ గ్రూప్
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无数据24 小时
无数据7 天
无数据30 天
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In the question last 6 days ,
That means 24-6=18 days
They worked together
(M+B)24=(M+B)18+M8
Now M:B=3:1
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