document.write( "Question 399675: The sum of the ages of a brother and sister is 27. If four times the brother's age is subtracted from three times the sister's age, the difference is 11.
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Algebra.Com's Answer #283631 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi, The sum of the ages of a brother and sister is 27
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document.write( "Let x and (27-x))represent the sister's and brother's ages respectively
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document.write( "Question states***
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document.write( " 3x - 4(27-x)= 11
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document.write( "Solving for x
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document.write( " 3x + 4x - 108 = 11
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document.write( "  7x = 119
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document.write( "   x = 17, the sister's age.  The brother is 10   (27-17)
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document.write( "CHECKING our Answer***
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document.write( "  3*17 - 4*10 = 51 - 40 = 11 \n" );
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