The 100-yard dash race-times, in seconds, for the Johnston Middle School track team are:
13.9, 13.2, 12.7, 16.3, 14.5, 14.7, 12.9, 14.0, 13.5, 12.9, 13.7
If Kathy finished 0.4 of a second slower than the first-place finisher, how long did it take her to finish the race? Represent the data, including Kathy's, using a stem-and-leaf plot.
What fraction of the racers completed the 100-yard dash faster than 14 seconds?
How many seconds faster is the first-place finisher than the last-place finisher? What is the combined race time of the first-, second-, third-, and fourth-place finishers? Justify your reasoning.
+321 It took Kathy 13.1 sec
and 3 racers finished faster than 14 sec and there are 11 racers not including Kathy so if you're including her the fraction would be 1/4 not including her would be 3/11
well, the first-place finisher had a time of 12.7 and the last place finisher had a time of 16.3 so... 16.3 - 12.7 is 3.6
the first place was 12.7
second place was12.9
third place was also 12.9
fourth place was 13.2
so we just add all of them up and get 51.7
