In a school band, 3/5 students play the trumpet, of these, 1/6 also play the trumbone, What fraction of the students in the band play both the Trumpet and Trumbone? Show steps if you can

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 : )