document.write( "Question 100932: What two-digit number is equal to twice the product of its digits? \n" ); document.write( "
Algebra.Com's Answer #73522 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! What two-digit number is equal to twice the product of its digits? \n" ); document.write( "------------- \n" ); document.write( "Every two digit number can be written as 10t+u where t is the tens \n" ); document.write( "digit and u is the ones digit. \n" ); document.write( "---------------------- \n" ); document.write( "EQUATION: \n" ); document.write( "10t+u = 2(t+u) \n" ); document.write( "10t+u = 2t+2u \n" ); document.write( "8t= u \n" ); document.write( "t = (1/8)u\r \n" ); document.write( "\n" ); document.write( "---------------- \n" ); document.write( "If u=8 then t = 1 \n" ); document.write( "-------------- \n" ); document.write( "Number: \n" ); document.write( "The number is 18 \n" ); document.write( "======================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |