Classify the quadrilateral. then find the value(s) of the variable(s).

pr=qs and pr bisects qs . pr=20x−27 and qs=x+581 .
the image is of a quadrilateral pqrs with base sr and diagonals pr and sq.

Anwser  is Qs if you think about the question
 

It asks how much longer will it take Tom to drive his regular trip, but nothing else is stated expect the distance and average speed... so I'm gonna with that! :D

Time = Distance/Speed
Time = 280 km / 80 km/h (divide 280/80, cancel out km)
Time = 3.5 hours

It will take Tom 3.5 hours to drive his regular trip.