SOLUTION: Each member of a track team with 45 members is to run a quarter mile. The coach has stated that practice will be light the next day if the team�s mean time is 57 seconds or less. T

Question 729851: Each member of a track team with 45 members is to run a quarter mile. The coach has stated that practice will be light the next day if the team�s mean time is 57 seconds or less. The first 44 members have run and have averaged 57.1 seconds. Charles is the last to run. How fast must Charles run in order to bring the average of 57 seconds exactly?
Answer by 2512(1) (Show Source): You can put this solution on YOUR website!
44*57.1 + x = 45*57. x = (45*57) - (44*57.1) = 52.6 sec. Charles has his work cut out for him.
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