document.write( "Question 469224: if the ratio of boy to girl in class is 3:4 and there is 28 people in class how many girls are they in the class \n" ); document.write( "

Algebra.Com's Answer #321914 by Tatiana_Stebko(1539) $\"\"$ $\"About$

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Let x is the ratio coefficient
\n" ); document.write( "Then in class $\"3x\"$ boys and $\"4x\"$ girls, together $\"3x%2B4x=28\"$
\n" ); document.write( " $\"7x=28\"$
\n" ); document.write( " $\"x=28%2F7\"$
\n" ); document.write( " $\"x=4\"$
\n" ); document.write( "There are $\"3%2A4=12\"$ boys and $\"4%2A4=16\"$ girls in class \n" ); document.write( "

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