document.write( "Question 632064: The unit's digit of a two-digit number is twice the ten's digit. Twice the original number is 12 more than number in reversed order. What is the original number? \n" ); document.write( "
Algebra.Com's Answer #397987 by nerdybill(7384) You can put this solution on YOUR website! The unit's digit of a two-digit number is twice the ten's digit. Twice the original number is 12 more than number in reversed order. What is the original number? \n" ); document.write( ". \n" ); document.write( "Let t = value of ten's digit \n" ); document.write( "then \n" ); document.write( "2t = value of unit's digit \n" ); document.write( ". \n" ); document.write( "from:\"Twice the original number is 12 more than number in reversed order.\" we get \n" ); document.write( "2(10t + 2t) = 10(2t) + t + 12 \n" ); document.write( "2(12t) = 20t + t + 12 \n" ); document.write( "24t = 21t + 12 \n" ); document.write( "3t = 12 \n" ); document.write( "t = 4 (value of ten's digit) \n" ); document.write( ". \n" ); document.write( "value of unit's digit: \n" ); document.write( "2t = 2(4) = 8 \n" ); document.write( ". \n" ); document.write( "Answer: 48\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |