SOLUTION: lewis and clark both drove their families to camp that was 420 miles away. Lewis drove at 60 mph and clark drove 10mph less than lewis. Lewis left at 8:30 a.m. and arrived at 3:30

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Question 1069520: lewis and clark both drove their families to camp that was 420 miles away. Lewis drove at 60 mph and clark drove 10mph less than lewis. Lewis left at 8:30 a.m. and arrived at 3:30pm. clark left at 8:00 a.m. How long did the trip take and when did clark arrive?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
                 SPEED         TIME        DISTANCE
LEWIS             60            7           420
CLARK             50                  420


The information about Lewis is not too important. Only Clark's information is.
His amount of travel time in hours was , 8 hours 12 minutes.

If he departed at 8:00AM then he arrived 4:12PM.
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!
lewis and clark both drove their families to camp that was 420 miles away. Lewis drove at 60 mph and clark drove 10mph less than lewis. Lewis left at 8:30 a.m. and arrived at 3:30pm. clark left at 8:00 a.m. How long did the trip take and when did clark arrive?
Clark’s time: 

Time Clark left: 8:00 a.m.

Time Clark arrived: 

Ignore/Pay no attention to anyone who says otherwise! 

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