document.write( "Question 1040376: I need a two digit number which after reversing I should get a two digit number which will be twice the previous number.
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Algebra.Com's Answer #655228 by MathTherapy(10556) $\"\"$ $\"About$

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\n" ); document.write( "I need a two digit number which after reversing I should get a two digit number which will be twice the previous number.
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Let tens and units digits be T, and U, respectively
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document.write( "Then number is: 10T + U, and when reversed is: 10U + T
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document.write( "We then get: 10U + T = 2(10T + U)
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document.write( "10U + T = 20T + 2U 
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document.write( "20T - T = 10U - 2U
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document.write( "19T = 8U
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document.write( "T, or tens digit = 
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document.write( "There's no digit, from 1 - 9, that when multiplied by 8, results in a double-digit number that is a MULTIPLE of 19.
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document.write( "Therefore, there is:  \n" );
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