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### Question Description

mattgregorio
School: New York University

What you need to do is cross multiply. This means multiply the numerator of one side with the denominator of the other side of the equation and set it equal to the other set of numerator times denominator.

In this case it means multiply 16 with r and 30 and 8.

So...

16r=30*8

16r=240 Divide both sides by 16

r=15

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Tutor went the extra mile to help me with this essay. Citations were a bit shaky but I appreciated how well he handled APA styles and how ok he was to change them even though I didnt specify. Got a B+ which is believable and acceptable.

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