document.write( "Question 1078301: Brett is Robbbie's older brother. The sum of their ages is 39. The difference of the ages is 9. How old are Brett And Robbie? \n" ); document.write( "

Algebra.Com's Answer #692806 by ikleyn(52914) $\"\"$ $\"About$

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document.write( "B + R = 39,\r\n" );
document.write( "B - R =  9.\r\n" );
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document.write( "When you see couple of similar equations, add them immediately. You will get\r\n" );
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document.write( "2B = 48  ---  B = 48/2 = 24.  Brett is 24 years old.\r\n" );
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document.write( "Robbie is 39-24 = 15 years old.\r\n" );
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