document.write( "Question 818940: Jack is eight years older than his sister. In three years he will be twice as old as she is, how old are they now? \n" ); document.write( "

Algebra.Com's Answer #492864 by TimothyLamb(4379) $\"\"$ $\"About$

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j = s + 8
\n" ); document.write( "j + 3 = 2(s + 3)
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\n" ); document.write( "j + 3 = 2(s + 3)
\n" ); document.write( "s + 8 + 3 = 2s + 6
\n" ); document.write( "---
\n" ); document.write( "s = 5
\n" ); document.write( "j = 13
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