SOLUTION: Please, need help with this problem. Ted walked for 30 minutes and biked for 60 minutes. He bikes four times faster than he walks. If the total distance travaled is 9 miles, th

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Question 574272: Please, need help with this problem.
Ted walked for 30 minutes and biked for 60 minutes. He bikes four times faster than he walks. If the total distance travaled is 9 miles, then what was his walking speed in miles per hour
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Ted walked for 30 minutes and biked for 60 minutes. He bikes four times faster than he walks. If the total distance travaled is 9 miles, then what was his walking speed in miles per hour
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Walk DATA:
time = 1/2 hr ; rate = x mph ; distance = rt = (1/2)x miles
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Bike DATA:
time = 1 hr ; rate = 4x mph ; distance = 4x miles
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Equation:
walk dist + bike dist = 9 miles
x/2 + 4x = 9
4.5x = 9
x = 2 mph (walking speed)
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Cheers,
Stan H.