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A can complete a task in 6 days and B can complete it in 8 days. If they work at it on alternate days with A starting on day 1, when will they complete the task?
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Explanation:
Case 1: If A begins, then the work will take:
Total number of days = (x+x\y) days
Case 2: If B begins,
Total number of days = x + 1 days
By applying this rule, if A begins, the work will be completed
= (6+6\8) days. That is, (27\4)
= 6 3\4 days