document.write( "Question 604072: carmen had $130 more than her sister, Rosa. rosa had twice as much money as their youngest sister, Zoe. If their mother gave carmen $60 and rosa $80, Carmen would have twice as much money as rosa. what was the total amount of money they had in the beginning?\r
\n" ); document.write( "\n" ); document.write( "I keep getting a negative number.
\n" ); document.write( "zoe =x
\n" ); document.write( "rosa=2x
\n" ); document.write( "carmen= 2x+130\r
\n" ); document.write( "\n" ); document.write( "SO....\r
\n" ); document.write( "\n" ); document.write( "2(2x+80)=2x+30+60\r
\n" ); document.write( "\n" ); document.write( "4x+160=2x+90
\n" ); document.write( "4x-2x+160=2x-2x+90
\n" ); document.write( "2x+160=90
\n" ); document.write( "2x+160-160=90-160
\n" ); document.write( "2x=-70
\n" ); document.write( "x=-35\r
\n" ); document.write( "\n" ); document.write( "what did I do wrong??? \n" ); document.write( "
Algebra.Com's Answer #381090 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
carmen had $130 more than her sister, Rosa. rosa had twice as much money as their youngest sister, Zoe. If their mother gave carmen $60 and rosa $80, Carmen would have twice as much money as rosa. what was the total amount of money they had in the beginning?
\n" ); document.write( "I keep getting a negative number.
\n" ); document.write( "zoe =x
\n" ); document.write( "rosa=2x
\n" ); document.write( "carmen= 2x+130
\n" ); document.write( ":
\n" ); document.write( "\" mother gave carmen $60 and rosa $80, Carmen would have twice as much money as rosa.\"
\n" ); document.write( "Wouldn't the equation be:
\n" ); document.write( "2x + 130 + 60 = 2(2x+80)
\n" ); document.write( "2x + 190 = 4x + 160
\n" ); document.write( "190 - 160 = 2x - 4x
\n" ); document.write( "30 = 2x
\n" ); document.write( "x = $15 is Zoes amt
\n" ); document.write( "then
\n" ); document.write( "2(15) = $30 is Rosa's in the beginning
\n" ); document.write( "and
\n" ); document.write( "2(15) + 130 = $160 is Carmen's original amt
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "See if this checks out in the statement
\n" ); document.write( "\"mother gave carmen $60 and rosa $80, Carmen would have twice as much money as rosa.
\n" ); document.write( "160 + 60 = 2(30+80)
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Looking over your work
\n" ); document.write( "2(2x+80)=2x+30+60
\n" ); document.write( "This should be
\n" ); document.write( "2(2x+80) = 2x + 130 + 60; not 30
\n" ); document.write( " \n" ); document.write( "
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