document.write( "Question 1133147: A grandfather is 4 times as old as his grandson now. Two years ago , the sum of their ages is 76 years. how old is his grandson now? \n" ); document.write( "

Algebra.Com's Answer #750327 by ikleyn(52797) $\"\"$ $\"About$

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document.write( "Let x be the grandson age now (the value under the question).\r\n" );
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document.write( "Then the grandfather age is 4x years.\r\n" );
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document.write( "Two years ago . . . \r\n" );
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document.write( "    (x-2) + (4x-2) = 76.\r\n" );
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document.write( "Simplify and solve for x.\r\n" );
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document.write( "    x - 2 + 4x - 2 = 76\r\n" );
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document.write( "    5x = 76 + 2 + 2 = 80\r\n" );
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document.write( "    x =  = 16  is the grandson age.      ANSWER\r\n" );
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