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John took a drive to town at an average rate of 40 mph in the evening he drove back at 30 mph if he spent a total of seven hours traveling what is the total distance traveled by John

 Sep 22, 2020
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Distance = rate * time      and the distance is the same both ways

 

40 t   =   30 ( 7-t )

40 t = 210 - 30t

70t = 210

t = 3                          one way distance is then 40 t = 120       roundtrip total distance = 240 miles

 Sep 23, 2020

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