This math video tutorial gives a step by step explanation to a math problem on "Math B August 06 Question 19".

Regents High School examinations, or simply The Regents, are exams given to students seeking high school Regents credit through the New York State Education Department, designed and administered under the authority of the Board of Regents of the University of the State of New York. Regents exams are prepared by a conference of selected New York teachers of each test's specific discipline who assemble a "test map" that highlights the skills and knowledge required from the specific discipline's learning standards.

How many legs in total do a chicken, a duck, and a sheep have?