document.write( "Question 941440:  In a room, all except
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document.write( "18 of the people are over 50 years of
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document.write( "age. 15 of the people in the room are
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document.write( "under 50 years of age, if 10% of the
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document.write( "people are at the age of 50 years,
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document.write( "how many people are in the room?\r
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document.write( "Please solve. Thanks in advance. \n" );
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| Algebra.Com's Answer #573856 by stanbon(75887)      You can put this solution on YOUR website! In a room, all except \n" ); document.write( " 18 of the people are over 50 years of \n" ); document.write( " age. 15 of the people in the room are \n" ); document.write( " under 50 years of age, if 10% of the \n" ); document.write( " people are at the age of 50 years, \n" ); document.write( " how many people are in the room? \n" ); document.write( "----- \n" ); document.write( "# over 50 = x -18 \n" ); document.write( "# under 50 = 15 \n" ); document.write( "# at 50 = 0.10x \n" ); document.write( "----- \n" ); document.write( "Equation: \n" ); document.write( "x -18 + 15 + 0.10x = x \n" ); document.write( "1.1x - 3 = x \n" ); document.write( "0.1x = 3 \n" ); document.write( "x = 30 (# of people in the room) \n" ); document.write( "---- \n" ); document.write( "Note:: the answer should be a whole number. \n" ); document.write( "================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------------- \n" ); document.write( " \n" ); document.write( " |