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     EduGorilla 
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    Two pipes A and B can fill a tank in 6 minutes and 7 minutes, respectively. If they are opened for one minute alternately, beginning with A, in how much time will they fill the tank?

    Options :-

    1. 7 minutes
    2. 65/8 minutes
    3. 61/8 minutes
    4. 63/7 minutes
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