one third of the sstudents in Mrs. Monroe\'s class have pets. one half of these students have dogs. what part of the students have dogs? Solution Say the class has 60 students. 1/3 of the students have pets or 60*(1/3) = 20 students have pets 1/2 of the students who have pets have dogs so 20*(1/2) = 10 students who have pets have dogs So 10/60 students have dogs or 1/6 of the students have dogs..