At a swim meet, it took Deborah 40.8 seconds to complete the 50 meter freestyle event. It took Robert 60.2 seconds to complete the 100 meter butterfly event. It took Emily 112.4 seconds to complete the 200 meter medley event. Who swam the fastest?

Emily's speed is the greatest, therefor she is the fastest at a speed of 1.78 m/s

Step-by-step explanation:

To determine who swam the fastest we need to calculate the speed for each swimmer;

Speed=Distance/time

Deborah covered a distance of 50 meters in 40.8 seconds,

Deborah's speed = (Deborah's distance/Time) = (50/40.8) = 1.23 meters per second

Robert covered a distance of 100 meters in 60.2 seconds,

Robert's speed = (Robert's distance/Time) = (100/60.2) = 1.66 meters per second

Emily covered a distance of 200 meters in 112.4 seconds,

Emily's speed = (Emily's distance/Time) = (200/112.4) = 1.78 meters per second

From the speeds for each we can conclude that;

Emily's speed (1.78 m/s) >Robert's speed (1.66 m/s) >Deborah's speed (1.23 m/s)

Emily's speed is the greatest, therefor she is the fastest at a speed of 1.78 m/s