document.write( "Question 1080311: the average age of a brother and sister was 35 years,at 5 years ago.what will be their average age at present?\r
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Algebra.Com's Answer #694482 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "the average age of a brother and sister was 35 years,at 5 years ago.what will be their average age at present?
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Average age 5 years ago: 35
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document.write( "Sum of the ages, 5 years ago: 2(35), or 70
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document.write( "Sum of the ages now: 70 + 2(5), or 70 + 10, or 80
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document.write( "Current average of the 2 ages:  \n" );
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