document.write( "Question 164832: Joan and Maria earn money by babysitting. If Joan earns twice as much as Maria, and the two girls earn a total of $40, how much does Maria earn? \n" ); document.write( "
Algebra.Com's Answer #121455 by stanbon(75887)\"\" \"About 
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Joan and Maria earn money by babysitting. If Joan earns twice as much as Maria, and the two girls earn a total of $40, how much does Maria earn?
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\n" ); document.write( "Using one variable:
\n" ); document.write( "Let Joan earnings be \"x\"; then Maria earned \"40-x\".
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\n" ); document.write( "EQUATION:
\n" ); document.write( "j = 2M
\n" ); document.write( "x = 2(40-x)
\n" ); document.write( "x = 80-2x
\n" ); document.write( "3x = 80
\n" ); document.write( "x = $26.67 (Joan's earnings)
\n" ); document.write( "40-x = $13.33 (Maria's earnings)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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