Question

There are 100 seniors and 80 juniors in the homecoming parade. The students split up into groups of even size, to fit on the parade floats. They want the most students possible on each float, with just juniors or just seniors on each float. How many students should be on each float?

Answer 1

20

Explanation:

Number of juniors = 80

Number of seniors = 100

To obtain the same and highest number of student on each float ; we find the highest common factor :

____80 ___100

_2__40___50

_2__20___25

_5__ 4____5

The highest common factor = (2 * 2 * 5) = 20