document.write( "Question 618292: shila is 15 years older than her brother sanjay. ten years from now shila will be twice as sanjay. find their present ages. \n" ); document.write( "

Algebra.Com's Answer #388808 by Maths68(1474) $\"\"$ $\"About$

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Let
\n" ); document.write( "Present age of Shila = h
\n" ); document.write( "Present age of Sanjay = s\r
\n" ); document.write( "\n" ); document.write( "Shila is 15 years older than Sanjay
\n" ); document.write( "h=s+15............(1)\r
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\n" ); document.write( "\n" ); document.write( "Ten years after
\n" ); document.write( "Shila will be = h+10
\n" ); document.write( "Sanjay will be = s+10\r
\n" ); document.write( "\n" ); document.write( "Then
\n" ); document.write( "Shila will be twice as Sanjay\r
\n" ); document.write( "\n" ); document.write( "(h+10)=2(s+10)
\n" ); document.write( "h+10=2s+20
\n" ); document.write( "h=2s+20-10
\n" ); document.write( "h=2s+10...................(2)\r
\n" ); document.write( "\n" ); document.write( "Substitute the value of h from (1) to (2)
\n" ); document.write( "s+15=2s+10
\n" ); document.write( "s-2s=10-15
\n" ); document.write( "-s=-5
\n" ); document.write( "Cancel out (-)
\n" ); document.write( "s=5
\n" ); document.write( "Put the value of s in (1)
\n" ); document.write( "h=s+15...........(1)
\n" ); document.write( "h=5+15
\n" ); document.write( "h=20\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Present age of Shila = h = 20
\n" ); document.write( "Present age of Sanjay = s = 5\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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