On Saturdays, Elliott practises the piano, walks his dog, does his homework, and cleans his room. Use an organized list to show all the possible orders in which Elliott can do these tasks.

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )