Question 675734
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Hi
Chris and Gilbert drove a total of 522 miles in 8.2 hours. 
Chris drove the first part of the trip and averaged 65 miles per hour. 
Gilbert drove the remainder of the trip and averaged 55 miles per hour.
D = rt
 {{{522 = 65t + 55(8.2 - t)}}}   || solve for t, time Chris drove