Question 32307
882 MILES = 72MPH TIMES X HOURS + 54 MILES TIMES (14-X) HOURS OR

882=72X+54(14-X) OR 882=72X+756-54X OR 882-756=72X-54X OR 126=16X
OR X=7 HOURS AT 72 MPH AND THE REMAINING 7 HOURS AT 54 MPH 
PROOF 882=72*7+54*7 OR 882=504+378 OR 882=882