document.write( "Question 1124068: The sum of the ages of Petra and her mother is 48. Her mother is 9 years more than twice as old as Petra. How old are Petra and her mother? \n" ); document.write( "

Algebra.Com's Answer #740431 by ikleyn(52776) $\"\"$ $\"About$

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document.write( "Petra + Mother        = 48\r\n" );
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document.write( "Petra + (2*Petra + 9) = 48\r\n" );
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document.write( "P + (2P +9) = 48\r\n" );
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document.write( "3P = 48 - 9\r\n" );
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document.write( "3P = 39  ====>  P = 39/3 = 13.\r\n" );
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document.write( "Answer.  Petra is 13 years old;  the mother is 2*13+9 = 35 years old.\r\n" );
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