document.write( "Question 360035: 70 percent of students are male. there are 24 female in a class how many men are in a class \n" ); document.write( "

Algebra.Com's Answer #256877 by robertb(5830) $\"\"$ $\"About$

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Let x = total number of students in class.
\n" ); document.write( "Then 0.70x = # of men in the class. But also x -24= # of men in the class, so
\n" ); document.write( " $\"0.70x+=+x-24\"$ ,or
\n" ); document.write( " $\"24+=+0.30x\"$ , or
\n" ); document.write( " $\"x+=+80\"$ . Therefore there are 80 - 24 = 56 men in the class.\r
\n" ); document.write( "\n" ); document.write( "ALTERNATE SOLUTION:
\n" ); document.write( "Let m = # men in the class.
\n" ); document.write( "Then $\"m%2F0.70\"$ = total number of students in the class.
\n" ); document.write( "This implies that $\"m%2F0.70+-+m+=+24\"$ , (Total number of students - number of men = number of women in the class.)
\n" ); document.write( " $\"%28m+-+0.70m%29%2F0.70+=+24\"$ ,
\n" ); document.write( " $\"0.30m+=+16.8\"$ ,
\n" ); document.write( " $\"m+=+56\"$ , the number of men in the class. \n" ); document.write( "

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