Three times as many children as adults attended a concert on saturday. an adults ticket cost $7 and a childs ticket cost $3. the theater collected a total of $6000. how many people bought tickets?

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. ?