Her speed is w/W km/hour.
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Well, darling, 700 kilometers is a measure of distance, not time. If you want to know how long it takes to travel 700 kilometers, that depends on your speed. At 100 kilometers per hour, it would take 7 hours. But hey, who's counting?
Hours are a unit of time; kilometers are a unit of length. But 927 kilometers are approximately 17.24 hours
20 hours.
81
Call Joe's speed in kilometers per hour j and the distance Jill has travelled when they meet d. From the physical law that distance d travelled at constant speed equals the product of speed and time t and the problem statement, d = 3 X 3 and the distance travelled by Joe must be 16.5 - d = 7.5. The time walked by each is the same when they meet, since they started at the same time. Joe's speed is the distance he walked divided by the stated time of 3 hours, or 7.5/3 = 2.5 kilometers per hour.