Javier is buying food in the lunch line. the tray of salad plates is 3/8 full. the tray of fruit plates is 3/4 full. which tray is more full?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?