document.write( "Question 861798: A number consists of two digits.
\n" ); document.write( "When the number is divided by the units digit, the answer is 3.
\n" ); document.write( "If the digits are reversed, the new number exceeds the original number by 36.
\n" ); document.write( "Determine the original number.
\n" ); document.write( "

Algebra.Com's Answer #519265 by richwmiller(17219)\"\" \"About 
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x=10a+b,
\n" ); document.write( "x/b=3,
\n" ); document.write( "y=10b+a,
\n" ); document.write( "y-x=36
\n" ); document.write( "a = 1, b = 5,
\n" ); document.write( "x = 15, y = 51
\n" ); document.write( "check
\n" ); document.write( "15/5=3
\n" ); document.write( "51-15=36
\n" ); document.write( "ok\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Just for fun how could you solve this by using logic and not algebra?
\n" ); document.write( "We are looking for a 2 digit product of 3 and a single digit from 0 to 9.
\n" ); document.write( "The factor is also the second digit
\n" ); document.write( "3*0=0
\n" ); document.write( "3*1=3
\n" ); document.write( "3*2=6
\n" ); document.write( "3*3=9
\n" ); document.write( "Now we have reached two digit products.
\n" ); document.write( "3*4=12
\n" ); document.write( "3*5=15
\n" ); document.write( "3*6=18
\n" ); document.write( "3*7=21
\n" ); document.write( "3*8=24
\n" ); document.write( "3*9=27\r
\n" ); document.write( "\n" ); document.write( "Only 3*5=15 satisfies the conditions
\n" ); document.write( "15 reversed =51
\n" ); document.write( "51-15=36
\n" ); document.write( "Success!
\n" ); document.write( "
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