Question 574272
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.