document.write( "Question 1175627: Three years ago a father wa s four times as old as his daughter is now.the product of their present ages is 430.calculate the present age of the daughter \n" ); document.write( "

Algebra.Com's Answer #801257 by ikleyn(52810) $\"\"$ $\"About$

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document.write( "Let x be the daughter present age;\r\n" );
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document.write( "then the father's present age is  (4x+3).\r\n" );
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document.write( "We are given that\r\n" );
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document.write( "    x*(4x+3) = 430.     (*)\r\n" );
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document.write( "The solution is obvious and you can guess it in 4 seconds:  x= 10.\r\n" );
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document.write( "ANSWER.  Daughter is 10 years old.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Alternatively, you can solve equation (*) formally.\r
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