Médias que interessam - I

Synopsis: A basic math problem is presented and solved step by step in the three friends talk about the affirmation of a weight loss drug. They realize that there are averages for men and for all people. Hence they deduce what would be the average for women. (Part 1/2)
Source: Unicamp - M3, Mathematics Multimedia.
URL: http://m3.ime.unicamp.br/recursos/1315