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Ratio question

Expert replies
by bronzie35 » Mon Apr 13, 2009 11:21 am
At a university, the ratio of the number of teaching assistants to the number of students in any course must always be greater than 3:80. At the university, what is the maximum number of students possible in a course that has 5 teaching assistants?

answer is 133

Thank you for your help!
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Source: — Problem Solving |

by mals24 » Mon Apr 13, 2009 1:19 pm
5/x > 3/80

Cross multiply

400/3>x

133.33>x

So maximum value of x can be 133.
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by bronzie35 » Tue Apr 14, 2009 8:06 am
UGH! I don't know why I can't remember to set these up in a porportion. Thanks.
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