document.write( "Question 1108538: Henry´s dad is 18 years older than him. His dad will be twice as old as Henry after 10 years. What is the present age of Henry? \n" ); document.write( "
Algebra.Com's Answer #723534 by SimsonNettikadan(1)\"\" \"About 
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Henry's age = x
\n" ); document.write( "Dad's age = x + 18\r
\n" ); document.write( "\n" ); document.write( "After 10 years....\r
\n" ); document.write( "\n" ); document.write( "Henry's age = x + 10
\n" ); document.write( "Dad's age = x + 18 + 10\r
\n" ); document.write( "\n" ); document.write( "(x + 18) + 10 = (x + 10) * 2
\n" ); document.write( "x + 28 = 2x + 20
\n" ); document.write( "x - 2x = 20 - 28
\n" ); document.write( "(-x) = (-8)
\n" ); document.write( "x = 8\r
\n" ); document.write( "\n" ); document.write( "Henry's present age = x = 8
\n" ); document.write( "Dad's present age = x + 18 = 8 + 18 = 26
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