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?

There are 30 students. (: Becuase since 6 students make up 20% of the class. you just multiply 5 by 6 and get 30.

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

If you really want to figure this out you make an equation to solve for the time
let's let
x = time from Elena to Jada and
x = time from Jada to Elena
12 then the equation
12 = 5x +3x
would help figuring out their distance say for one of them
12 = x(5+3)
12/8 = x
1.5 = x
1. 5 hours they will meet up