[Adv.] ASD Inc.
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Riddles by Travis: Fred, Jim, and Laura all set off down a road. Jim and Laura can walk at a top speed of 2 mph, and Fred can walk at a top speed of 4 mph. There is also a single bicycle which Jim and Laura can ride at 12 miles per hour and Fred can ride at 16 miles per hour (one cyclist at a time). What is the minimum amount of time for all three to travel 10 miles down the road?
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