document.write( "Question 350575: which numberrs are exactly 2 times the sum of their digits
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Algebra.Com's Answer #250585 by ewatrrr(24785)\"\" \"About 
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Hi,
\n" ); document.write( "Note: Let td represent a 2 digit number. Then (10*t + d) is the value of the number.
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\n" ); document.write( "Write as You Read
\n" ); document.write( "(10*t + d) = 2(t + d)
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\n" ); document.write( "simplifying
\n" ); document.write( "10*t + d = 2t + 2d
\n" ); document.write( "8*t = d
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\n" ); document.write( "If t =1, then d=8 for example
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\n" ); document.write( "18 is exactly 2 times the sum of its digits
\n" ); document.write( "2(1 + 8)= 18
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