document.write( "Question 1151315: Bob is 6 years older than Fred. Fred is half as old as Bob. How old are they now?
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Algebra.Com's Answer #773022 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "If you read the problem and think on it 1 minute, you should be able to guess / (to recognize) the answer mentally\r\n" );
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document.write( "    Bob is 12 years;  Fred is 6 years.\r\n" );
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document.write( "You also can solve the problem algebraically / (formally).\r\n" );
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document.write( "Let x be the Fred's age. Then Bob's age is  2x, according to the condition, and\r\n" );
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document.write( "    2x - x = 6.\r\n" );
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document.write( "Hence, x = 6  (the Fred's age)  and 2x = 12 (the Bob's age).\r\n" );
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