SOLUTION: Kay rode his bike from his home to Daniels and walked back home. The total travel time was 45 minutes. If Kay average 20 mph on the bike and 4 mph walking, how far does Daniel liv

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Question 245314: Kay rode his bike from his home to Daniels and walked back home. The total travel time was 45 minutes. If Kay average 20 mph on the bike and 4 mph walking, how far does Daniel live from Kay.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Kay rode his bike from his home to Daniels and walked back home.
The total travel time was 45 minutes.
If Kay average 20 mph on the bike and 4 mph walking, how far does Daniel live from Kay.
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Bike DATA:
rate = 20 mph ; distance = x miles ; time = d/r = x/20 hrs.
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Walking DATA:
rate = 4 mph ; distance = x miles ; time = d/r = x/4 hrs.
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Equation:
time + time = 3/4 hr.
x/20 + x/4 = 3/4
x + 5x = 15
6x = 15
x = 5/2 = 2.5 miles (distance from Kay's house to Daniel's)
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Cheers,
Stan H.