document.write( "Question 1044405: Help me with this question please.\r
\n" ); document.write( "\n" ); document.write( "At present Mary is four younger than her brother Tom.If Tom is n years old,what will be the sum of their age in three years time?If the sum of their age is 15 then,how old will Tom be?
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Algebra.Com's Answer #659680 by Alan3354(69443)\"\" \"About 
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At present Mary is four younger than her brother Tom. If Tom is n years old,what will be the sum of their age in three years time?
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\n" ); document.write( "The difference remains 4 years.
\n" ); document.write( "Tom is n, Mary is n-4.
\n" ); document.write( "In 3 years, Tom will be n+3, Mary will be n-1.
\n" ); document.write( "(n+3) + (n-1) = 2n+2
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\n" ); document.write( "If the sum of their age is 15 then,how old will Tom be?
\n" ); document.write( "How old will he be when?
\n" ); document.write( "--------
\n" ); document.write( "Now?
\n" ); document.write( "T - M = 4
\n" ); document.write( "T + M = 15
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\n" ); document.write( "2T = 19
\n" ); document.write( "Tom is 9.5
\n" ); document.write( "Mary is 5.5
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