document.write( "Question 1066161: How many 2-digit numbers are there in which the sum of its digits drop to its previous half when you add a four to it. \n" ); document.write( "

Algebra.Com's Answer #681349 by MathTherapy(10557) $\"\"$ $\"About$

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\n" ); document.write( "How many 2-digit numbers are there in which the sum of its digits drop to its previous half when you add a four to it.
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If I understand this right, is this saying that when 4 is added to the number, the sum of its digits becomes  of the sum of the digits of the original number?
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document.write( "If so, then your number is: , since the sum of its digits is 10 (2 + 8), and when 4 is added to the number, the result is 32 (28 + 4), whose digits 
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document.write( "sum to 5 (3 + 2), and which is actually  of 2 + 8, or  of 10. \n" );
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