document.write( "Question 53534: At Annville high school,30% of the students in the Math club are in the Science club, & 80% of the students in the science club are in the math club. There are 15 students in the science club. How many students are in the math club?
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Algebra.Com's Answer #35779 by Edwin McCravy(20055) $\"\"$ $\"About$

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At Annville high school,30% of the students in\r\n" );
document.write( "the Math club are in the Science club, & 80% \r\n" );
document.write( "of the students in the science club are in the\r\n" );
document.write( "math club. There are 15 students in the science\r\n" );
document.write( "club. How many students are in the math club?\r\n" );
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document.write( "Let M = number of students in the math club.\r\n" );
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document.write( "Number of students in the math club that are\r\n" );
document.write( "also in the science club = 30% of M = .3M\r\n" );
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document.write( "Number of students in the science club that\r\n" );
document.write( "are also in the math club = 80% of 15 or 12\r\n" );
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document.write( "These are equal\r\n" );
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document.write( ".3M = 12\r\n" );
document.write( "  M = 12/.3\r\n" );
document.write( "  M = 40\r\n" );
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document.write( "So there are 40 students in the math club.\r\n" );
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document.write( "Edwin

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