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
\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.\r
\n" ); document.write( "\n" ); document.write( "3) The sum of two numbers is 56. Their difference is 22. Find the larger number.\r
\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.
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Algebra.Com's Answer #193324 by drk(1908)\"\" \"About 
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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
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