document.write( "Question 831375: 7 times a two digit number is eaquel to 4 times a number formed by revicing the digit.the sum of the digit of number is 3.find the number?pls give me the required steps also? \n" ); document.write( "
Algebra.Com's Answer #501284 by JulietG(1812) You can put this solution on YOUR website! Let's look at this a little at a time. \n" ); document.write( "\"the sum of the digits of number is 3\" \n" ); document.write( "What are the choices that will equal 3? {0,3} {3,0} {2,1} or {1,2} \n" ); document.write( "There are only 4 choices - 30, 03, 21, 12 \n" ); document.write( ". \n" ); document.write( "\"7 times a two digit number is equal to 4 times a number formed by reversing the digit.\" (I'm assuming that was supposed to be REVERSING) \n" ); document.write( "The easiest way is to plug the possible numbers in. \n" ); document.write( ". \n" ); document.write( "30 \n" ); document.write( "7*30 = 4*03 \n" ); document.write( "We don't even need to do the math to see that this is wrong. \n" ); document.write( ". \n" ); document.write( "03 \n" ); document.write( "7*03 = 4*30 \n" ); document.write( "Same \n" ); document.write( ". \n" ); document.write( "21 \n" ); document.write( "7*21 = 4*12 \n" ); document.write( "Again, math is too far off. \n" ); document.write( ". \n" ); document.write( "12 \n" ); document.write( "7*12 = 4*21 \n" ); document.write( "7*12 = 84 \n" ); document.write( "4*21 = 84 \n" ); document.write( "Success! The number is 12 <<-- \n" ); document.write( " |