question from 2011 math destroyer

[blankman321]

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I am sort of lost on the reasoning behind this question:

Question: Five chairs are lined up in a row. How many ways can three boys and two girls sit in these chairs if the girls always sit side by side?

answer is 48 ways

Question #38 from 2011 Math Destroyer

 

[CoFe2]

http://forums.studentdoctor.net/threads/math-problem.651233/
someone asked about the exact same one a few years ago! 🙂

 

[blankman321]

thanks! I was hoping the poster used a more specific title. 😀