document.write( "Question 984761: 45% of the students in a class are girls and the number of boys exceeds the number of girls by 30. How many students are there in the class? \n" ); document.write( "

Algebra.Com's Answer #605577 by Fombitz(32388) $\"\"$ $\"About$

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$\"B=G%2B30\"$
\n" ); document.write( " $\"G%2F%28G%2BB%29=45%2F100\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"100G=45%28G%2BG%2B30%29\"$
\n" ); document.write( " $\"100G=45%282G%2B30%29\"$
\n" ); document.write( " $\"100G=90G%2B1350\"$
\n" ); document.write( " $\"10G=1350\"$
\n" ); document.write( " $\"G=135\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"B=135%2B30\"$
\n" ); document.write( " $\"B=165\"$ \n" ); document.write( "

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