document.write( "Question 269364: A number consist of two digit whose sum is 5. When the digits are reversed, tne number becomes greater by 9.Find the number: \n" ); document.write( "
Algebra.Com's Answer #197428 by stanbon(75887)\"\" \"About 
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A number consist of two digit whose sum is 5. When the digits are reversed, tne number becomes greater by 9.Find the number:
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\n" ); document.write( "Let the number be 10t+u where t is the tens and u is the units digit.
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\n" ); document.write( "Equations:
\n" ); document.write( "t + u = 5
\n" ); document.write( "10u+t = 10t+u +9
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\n" ); document.write( "Simplify :
\n" ); document.write( "t + u = 5
\n" ); document.write( "9u - 9t = 9
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\n" ); document.write( "t + u = 5
\n" ); document.write( "-t+u = 9
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\n" ); document.write( "Add:
\n" ); document.write( "2u = 14
\n" ); document.write( "u = 7
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\n" ); document.write( "But, if u = 7, then t= -2
\n" ); document.write( "and that makes no sense
\n" ); document.write( "for a 2-digit number.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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