Which student has the greatest ratio of reports to presentations

The double bar graph shows the number of reports and presentations five students gave during a school year.

Which student has the greatest ratio of reports to presentations?

http://oi49.tinypic.com/15g47ko.jpg


Fran

Tammy

Marc

Shannon

Marc- 7 reports to 1 presentation

Greatest ratio of reports to presentations...
So you're looking for the biggest blue bar with the smallest red. That throws out the first three slackers.
Which leaves Marc and Shannon.

Marc has 7 reports to 1 presentation.
Shannon has 10 reports to 2 presentations.

7:1 is bigger than 10:2 (5:1), so Marc gets the McDonalds happy hat.