1. Tom is gathering data on the music preferences of his classmates. He randomly surveyed a sample of the total student population. There are 1,200 total students on campus. Type Number of Students Pop 30 Rock 28 R&B 22 Rap 24 Country 17 Electronica 11 Other 18 Total 150 a Write and solve a proportion to find the approximate number of students on campus who prefer R&B music.