Three workers—Adam, Beth, and Carl—finish their shifts at 2 PM, 4 PM, and 6 PM. Beth finishes two hours after Adam. Carl does not finish at 6 PM. What time does each person finish?
Adam finishes at 4 PM, Beth finishes at 6 PM, and Carl finishes at 2 PM.
The available time slots are 2 PM, 4 PM, and 6 PM. Since Beth finishes 2 hours after Adam, the possible (Adam, Beth) pairs are (2 PM, 4 PM) or (4 PM, 6 PM). If Adam finished at 2 PM and Beth at 4 PM, Carl would have to finish at 6 PM, which contradicts the rule that Carl does not finish at 6 PM. Therefore, Adam must finish at 4 PM, Beth at 6 PM, and Carl at 2 PM.
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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