document.write( "Question 936474: Having some trouble trying to figure out this problem. Tom is 8 years older than his sister. In 4 years he will be twice his sister's age. How old is tom?
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Algebra.Com's Answer #569949 by Alan3354(69443)\"\" \"About 
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Having some trouble trying to figure out this problem. Tom is 8 years older than his sister. In 4 years he will be twice his sister's age. How old is tom?
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\n" ); document.write( "The difference in age is constant = 8 yrs.
\n" ); document.write( "--> 8 & 16 in 4 yrs.
\n" ); document.write( "--> 4 & 12 now
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