document.write( "Question 95163This question is from textbook
\n" ); document.write( ": The sum of the digits of a two digit number is 12. The tens digit is three times the ones digit. What is the number ? Thank you \n" ); document.write( "

Algebra.Com's Answer #69239 by stanbon(75887) $\"\"$ $\"About$

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The sum of the digits of a two digit number is 12. The tens digit is three times the ones digit. What is the number ?
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\n" ); document.write( "Comment: Any two digit number can be written as 10t+u where t is the tens
\n" ); document.write( "digit and u is the units digit.
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\n" ); document.write( "EQUATIONS:
\n" ); document.write( "t+u=12
\n" ); document.write( "t = 3u
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\n" ); document.write( "Substitute t=3u into the 1st equation and solve for \"u\".
\n" ); document.write( "3u+u=12
\n" ); document.write( "4u = 12
\n" ); document.write( "u = 3
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\n" ); document.write( "Substitute that into t+u=12 to solve for \"t\".
\n" ); document.write( "t+3 = 12
\n" ); document.write( "t = 9
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\n" ); document.write( "The number is 93
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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