document.write( "Question 52119: During swim team practice, Ruth swam the 100-yard race 3 times. Her fastest time was 52.3 seconds. Her slowest time was 56.3 seconds. Ruth's average time was 54.0 seconds. Explain how to determins Ruth's time for the third race. \n" ); document.write( "

Algebra.Com's Answer #34749 by checkley71(8403) $\"\"$ $\"About$

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(52.3+X+56.3)/3=54 OR (108.6+X)/3=54 OR 108.6+X=162 OR X=162-108.6 OR X=53.4\r
\n" ); document.write( "\n" ); document.write( "PROOF (52.3+53.4+56.3)/3=54 OR 162/3=54 OR 54=54 \n" ); document.write( "

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