SOLUTION: Sarah is nine years older than her sister Tara ,who is seven.What is their average age.thanks

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Question 910298: Sarah is nine years older than her sister Tara ,who is seven.What is their average age.thanks
Found 2 solutions by ewatrrr, stanbon:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Tara = 7
Sarah = (7+9) = 16
%287%2B16%29%2F2+=+23%2F2 11 1/2 yrs their average age

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Sarah is nine years older than her sister Tara ,who is seven.What is their average age.thanks
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Tara:: 7 yrs
Sarah: 7+9 = 16 yrs
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Average:: (7+16)/2 = 23/2 = 11.5 yrs
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Cheers,
Stan H.
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