document.write( "Question 304397: Herman is half as old as his sister. In seven years he will be two-thirds his sister's age. How old her Herman currently? \n" ); document.write( "
Algebra.Com's Answer #217984 by ankor@dixie-net.com(22740)\"\" \"About 
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Herman is half as old as his sister.
\n" ); document.write( "h = \"1%2F2\"s
\n" ); document.write( "or
\n" ); document.write( "s = 2h
\n" ); document.write( ":
\n" ); document.write( " In seven years he will be two-thirds his sister's age.
\n" ); document.write( "h + 7 = \"2%2F3\"(s + 7)
\n" ); document.write( "Multiply both sides by 3
\n" ); document.write( "3(h+7) = 2(s + 7)
\n" ); document.write( "3h + 21 = 2s + 14
\n" ); document.write( "3h = 2s + 14 - 21
\n" ); document.write( "3h = 2s - 7
\n" ); document.write( "Replace s with 2h
\n" ); document.write( "3h = 2(2h) - 7
\n" ); document.write( "3h = 4h - 7
\n" ); document.write( "7 = 4h - 3h
\n" ); document.write( "h = 7 is Herman's present age
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "Check solution, s = 2(7) = 14 is sister's age
\n" ); document.write( "\"In seven years he will be two-thirds his sister's age.
\n" ); document.write( "7 + 7 = \"2%2F3\"(14 + 7)
\n" ); document.write( "14 = \"2%2F3\"(21) \n" ); document.write( "
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