There are 21 males in the algebra 1 class. If 75% is female, how many students are there in the class?

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asked Mar 22, 2015 28.8k views

2 votes

There are 21 males in the algebra 1 class. If 75% is female, how many students are there in the class?

Mathematics
middle-school

Krishna Prasad asked

by Krishna Prasad

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1 Answer

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$x-\ female\\\\ y-all\ students\\\\ z=21\\ x=0,75y\\\\ x+z=y\\ 0,75y+21=y\ \ \ |subtract\ 0,75y\\ 21=0,25y\ \ \ | divide\ by\ 0,25\\y=84\\\\There\ are\ 84\ students\ in\ class.$

Jamie Babineau answered Mar 27, 2015

by Jamie Babineau

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