I need help with this one math question

Which number produces a rationale number when multiplied by 1/5

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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. ?