SOLUTION: 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. Expl

SOLUTION: 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. Expl

Algebra.Com

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.
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
(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
PROOF (52.3+53.4+56.3)/3=54 OR 162/3=54 OR 54=54
RELATED QUESTIONS
The times for the race came down with practice. The average time for the 5 racers in the... (answered by Mathtut)

Donald and Eric swam as a team in a relay race. Donald swam at a steady 3 km/h while Eric (answered by ankor@dixie-net.com)

I have a word problem that I cannot get into the right form. If I can get it into the... (answered by rwm)

Mar T. Ello participated in a triathlon in which he swam 3 miles, ran 5 miles and then... (answered by Edwin McCravy)

ruth is 22 years older than her son. 7 years ago ruth was 3 times her sons age... how old (answered by duckness73)

In the 2004 summer Olympics, the united states women's 4x100 meter freestyle relay team,... (answered by ankor@dixie-net.com)

Mary ran 100 meters in 15.4 secs and came third in a race.Darren was fourth but beat... (answered by ankor@dixie-net.com)

ii. You participate in a triathlon in which you swam 3 miles, ran 5 miles, and then... (answered by ptaylor)

Donald and Eric swam as a team in a relay race. Donald swam at a steady 3km/h while Eric... (answered by ankor@dixie-net.com)