document.write( "Question 262404: 1) Myrna is 27 years older than her son. A year ago, she was twice as old as him. How old is Myrna now?\r
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document.write( "2) The sum of two numbers is 574. One number is six times the other. Find the larger number.\r
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document.write( "3) The sum of two numbers is 56. Their difference is 22. Find the larger number.\r
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document.write( "4) The sum of two numbers is 1457. Four times the first number minus twice the second number is 8. Find the larger number. \n" );
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Algebra.Com's Answer #193324 by drk(1908) ![]() You can put this solution on YOUR website! 1) Myrna is 27 years older than her son. A year ago, she was twice as old as him. How old is Myrna now? \n" ); document.write( "answer - - > \n" ); document.write( "M = S + 27 \n" ); document.write( "M-1 = 2*(S-1) \n" ); document.write( "S+27-1 = 2S - 2 \n" ); document.write( "S + 26 = 2S - 2 \n" ); document.write( "28 = S \n" ); document.write( "M = 55 \n" ); document.write( "-- \n" ); document.write( "2) The sum of two numbers is 574. One number is six times the other. Find the larger number. \n" ); document.write( "Answer --> \n" ); document.write( "x + y = 574 \n" ); document.write( "x = 6y \n" ); document.write( "6y + y = 574 \n" ); document.write( "7y = 574 \n" ); document.write( "y = 82 \n" ); document.write( "x = 492 \n" ); document.write( "-- \n" ); document.write( "3) The sum of two numbers is 56. Their difference is 22. Find the larger number. \n" ); document.write( "answer - - > \n" ); document.write( "x + y = 56 \n" ); document.write( "x - y = 32 \n" ); document.write( "add down to get \n" ); document.write( "2x = 88 \n" ); document.write( "x = 44 \n" ); document.write( "y = 12 \n" ); document.write( "-- \n" ); document.write( "4) The sum of two numbers is 1457. Four times the first number minus twice the second number is 8. Find the larger number. \n" ); document.write( "answer -- > \n" ); document.write( "x + y = 1457 \n" ); document.write( "4x - 2y = 8 \n" ); document.write( "multiply first equation by 2 to get \n" ); document.write( "2x - 2y = 2914 \n" ); document.write( "add second and third to get \n" ); document.write( "6x = 2922 \n" ); document.write( "divide to get \n" ); document.write( "x = 487 \n" ); document.write( "y = 970 \n" ); document.write( " |