document.write( "Question 350574: which numbers are exactly 4 timesthe sum of their digits \n" ); document.write( "
Algebra.Com's Answer #250587 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
Hi,
\n" ); document.write( "Note: Let td represent a 2 digit number. Then (10*t + d) is the value of the number.
\n" ); document.write( ".
\n" ); document.write( "Write as You Read
\n" ); document.write( "(10*t + d) = 4(t + d)
\n" ); document.write( ".
\n" ); document.write( "simplifying
\n" ); document.write( "10*t + d = 4t + 4d
\n" ); document.write( "6*t = 3*d
\n" ); document.write( ".
\n" ); document.write( "If t=1, then d=2 for example
\n" ); document.write( "12 is exactly 4 times the sum of its digits 4(1+2) = 12
\n" ); document.write( ".
\n" ); document.write( "If t=2, then d=4 for example
\n" ); document.write( "24 is exactly 4 times the sum of its digits 4(2 + 4)= 24
\n" ); document.write( ".
\n" ); document.write( "If t=3, then d=6 for example
\n" ); document.write( "36 is exactly 4 times the sum of its digits 4(3 + 6)= 36
\n" ); document.write( ".
\n" ); document.write( "If t=4, then d=8 for example
\n" ); document.write( "48 is exactly 4 times the sum of its digits 4(4 + 8)= 48 \n" ); document.write( "
\n" );