<PRE><B>Question 934390</B>
t = time walking
x = speed biking
y = speed walking = 2 mph
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x = 6y
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s = d/t
t = d/s
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time biking:
1 - t = d/x
1 - t = d/6y
t = 1 - d/6*2
t = 1 - d/12
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time walking:
t = d/y
t = d/2
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equate times:
1 - d/12 = d/2
1 = d/2 + d/12
1 = 6d/12 + d/12
1 = 7d/12
d = 12/7
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t = d/2
t = (12/7)/2
t = 0.857142857143 hours
t = (0.857142857143 hours) * (60 minutes/hour)
t = 51.43 minutes
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