document.write( "Question 624148: sobha age 13 yrs ago is half her age 13 years later.find her present age? \n" ); document.write( "
Algebra.Com's Answer #392827 by Maths68(1474)\"\" \"About 
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Let
\n" ); document.write( "Present age of Sobha = s years old\r
\n" ); document.write( "\n" ); document.write( "13 years ago Sobha was = s-13 years old
\n" ); document.write( "13 later Sobha will be = s+13 years old\r
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\n" ); document.write( "\n" ); document.write( "Sobha age 13 yrs ago is half her age 13 years later
\n" ); document.write( "s-13=1/2(s+13)
\n" ); document.write( "2(s-13)=s+13
\n" ); document.write( "2s-26=s+13
\n" ); document.write( "2s-s=13+26
\n" ); document.write( "s=39\r
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\n" ); document.write( "\n" ); document.write( "Present age of Sobha = s = 39 years old\r
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