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 #122530 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
M=S+11
\n" ); document.write( "M+8=2(S+8)
\n" ); document.write( "(S+11)+8=2(S+8)
\n" ); document.write( "S+19=2S+16
\n" ); document.write( "S-2S=16-19
\n" ); document.write( "-S=-3
\n" ); document.write( "S=3 YEARS OLD FOR THE SISTER NOW.
\n" ); document.write( "M=3+11=14 YEARS OLD FOR MARK NOW.
\n" ); document.write( "PROOF:
\n" ); document.write( "14+8=2(3+8)
\n" ); document.write( "22=2*11
\n" ); document.write( "22=22\r
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