document.write( "Question 910298: Sarah is nine years older than her sister Tara ,who is seven.What is their average age.thanks \n" ); document.write( "
Algebra.Com's Answer #552367 by stanbon(75887)\"\" \"About 
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Sarah is nine years older than her sister Tara ,who is seven.What is their average age.thanks
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\n" ); document.write( "Tara:: 7 yrs
\n" ); document.write( "Sarah: 7+9 = 16 yrs
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\n" ); document.write( "Average:: (7+16)/2 = 23/2 = 11.5 yrs
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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