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 #569929 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Tom is 8 years older than his sister. In 4 years he will be twice his sister's age. How old is tom? \n" ); document.write( "----------------- \n" ); document.write( "Equations: \n" ); document.write( "t = s + 8 \n" ); document.write( "t+4 = 2(s+4) \n" ); document.write( "---------- \n" ); document.write( "Substitute for \"t\" and solve for \"s\": \n" ); document.write( "s+8+4 = 2s+8 \n" ); document.write( "s = 4 (Sister's age now) \n" ); document.write( "---- \n" ); document.write( "Ans: t = s+8 = 12 (Tom's age now) \n" ); document.write( "----------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------------- \n" ); document.write( " |