document.write( "Question 534234: Greg is 4 times older than stab. 8 years from now Greg will be twice as old as stab. How old will stab be then? \n" ); document.write( "
Algebra.Com's Answer #351405 by Maths68(1474)\"\" \"About 
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Let
\n" ); document.write( "Present age of Greg = g
\n" ); document.write( "Present age of Stab = s\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Greg is 4 times older than stab.
\n" ); document.write( "g=4s............(1)
\n" ); document.write( "8 years from now
\n" ); document.write( "Greg will be = g+8
\n" ); document.write( "Stab will be = s+8
\n" ); document.write( "Then
\n" ); document.write( "Greg will be twice as old as stab.
\n" ); document.write( "g+8=2(s+8)
\n" ); document.write( "g+8=2s+16
\n" ); document.write( "g=2s+16-8
\n" ); document.write( "g=2s+8...........(2)
\n" ); document.write( "Put the value of g from (1) to (2)
\n" ); document.write( "g=2s+8
\n" ); document.write( "4s=2s+8
\n" ); document.write( "4s-2s=8
\n" ); document.write( "2s=8
\n" ); document.write( "s=8/2
\n" ); document.write( "s=4
\n" ); document.write( "Put the value of s in (1)
\n" ); document.write( "g=4s
\n" ); document.write( "g=4*4
\n" ); document.write( "g=16\r
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\n" ); document.write( "\n" ); document.write( "Present age of Greg = g = 16 years old
\n" ); document.write( "Present age of Stab = s = 4 years old\r
\n" ); document.write( "\n" ); document.write( "8 Years from Now
\n" ); document.write( "Greg will be = 16+8 = 24 years old
\n" ); document.write( "Stab will be = 4+8 = 12 years old
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