document.write( "Question 471113: in a class of 63 students the number of girls is 3/4 of the number of boys find the number of girls \n" ); document.write( "

Algebra.Com's Answer #323135 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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in a class of 63 students the number of girls is 3/4 of the number of boys find the number of girls
\n" ); document.write( ":
\n" ); document.write( "From this we can write two equations
\n" ); document.write( "g + b = 63
\n" ); document.write( "and
\n" ); document.write( "g = $\"3%2F4\"$ b
\n" ); document.write( "replace g in the first equation, use .75 for 3/4
\n" ); document.write( ".75b + b = 63
\n" ); document.write( "1.75b = 63
\n" ); document.write( "b = $\"63%2F1.75\"$
\n" ); document.write( "b = 36 boys
\n" ); document.write( "then
\n" ); document.write( "g + 36 = 63
\n" ); document.write( "g = 63 - 36
\n" ); document.write( "g = 27 girls
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check: $\"27%2F36\"$ = $\"3%2F4\"$ \n" ); document.write( "

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