You mother and father took turns driving on a
640-mile trip that took 11 hours to complete.
Your mother drove at a constant speed of
55 mph and your father drove at a constant
speed of 60 mph.
how long did the FATHER drove
Stacey Warren - Expert brainly.com
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i dont know ? :/ thats what im trying to figure out .
okay. I'm just gunna assume they both drove 320 miles.
or 10 2/3 hours.
I saw this Q somewhere here ! .. the asking was for mother time ... The man who answer this arrived to solution of : 4 hours mother drived
then ofcourse father = 11-4 = 7 hours :D
by the way ..my mother dont know how to drive :D
dont give me medal its not my answer
m = mother time
f= father time
55 m +60 f = 640 ...........1
sub this in 1
605 -55f +60 f = 640