Question 1101341
An accountant rides a bus part of the way to work every day and walks the rest of the way. 
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The bus averages 40 mph, and the accountant walks at a speed of 3 mph. The distance from home to work is 17 miles, and the total time for the trip is 3 hours. Find how far the accountant walks and how far he rides the bus.
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40b + 3w = 17 miles
b + w = 3 hrs
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Modify::
40b + 3w = 17
3b + 3w = 9
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37b = 8
bus time = 8/37 hrs
distance the bus went = (8/37)40 = 8.65 miles 
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40b + 3w = 17
40b + 40w = 120
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37w = 103
w = 103/37 hrs
Distance walked = (103/37)3 = 8.35 miles
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Cheers,
Stan H.
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