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 Solving Percent Problems

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if 45 over 100 is = to 80 over blank. what is blank?

 Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015
edited by Guest  Oct 13, 2015

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 #1
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if 45 over 100 is = to 80 over blank. what is blank?

 

45/100=80/n cross multiply

45n=8000 divide both sides by 45

n=8000/45

n=177 7/9

 Oct 13, 2015

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