Math Quiz — NYT Learning Network

Through Math for America, I am part of an ongoing collaboration with the New York Times Learning Network.  My latest contribution, a Test Yourself quiz-question, can be found here

Test Yourself Math — April 15th, 2013

This problem deals with the increasing number of ADHD diagnoses for children and teenagers in the US.  Approximately how many high school-aged boys are currently on medication for ADHD?