Two trucks are parked at Lucy's Diner. Chuck takes off, at \(50\) miles per hour, heading due east at \(9\) a.m. in one

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Two trucks are parked at Lucy's Diner. Chuck takes off, at \(50\) miles per hour, heading due east at \(9\) a.m. in one of the trucks. Two hours later Patricia takes off, at \(70\) miles per hour, in the other truck heading due west. How long from Chuck's departure time will it be until they are \(700\) miles apart?

A. \(3\) hrs. \(11\) minutes
B. \(5\) hrs.
C. \(5\) hrs. \(50\) minutes
D. \(7\) hrs.
E. \(11\) hrs. \(40\) minutes

The OA is D
Source: — Problem Solving |