document.write( "Question 166257: Please held me solve this problem:\r
\n" ); document.write( "\n" ); document.write( "Mark is 11 years older that his sister. In 8 years he will be twice as old as she will be then. How old are they now?
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Algebra.Com's Answer #122528 by stanbon(75887)\"\" \"About 
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Please held me solve this problem:
\n" ); document.write( "Mark is 11 years older that his sister. In 8 years he will be twice as old as she will be then. How old are they now?
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\n" ); document.write( "Ages NOW:
\n" ); document.write( "Sister's age is \"x\"
\n" ); document.write( "Mark's age is \"x+11\"
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\n" ); document.write( "Ages in 8 years:
\n" ); document.write( "Sister will be \"x+8\"
\n" ); document.write( "Mark will be \"x+19\"
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\n" ); document.write( "EQUATION:
\n" ); document.write( "x+19 = 2(x+8)
\n" ); document.write( "x+19 = 2x+16
\n" ); document.write( "x = 3
\n" ); document.write( "---------
\n" ); document.write( "Sister is NOW 3 years old
\n" ); document.write( "Mark is NOW 14 years old
\n" ); document.write( "===========================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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