In a poll of the students in mrs. Rodriguez's class, six say they leave within six blocks of school. This amounted to 20% of the class, how many students are in Mrs. Rodriguez's class?
Use the cross multiplication 6/x=20/100 to find x you have to multiply 6 and 100 then divide the answer by 20 so it would be 6×100/20=30 Mrs. Rodriguez has 30 students