Answer:
Jesse swims the fastest with the rate of 5.5 ft in 1 second.
Step-by-step explanation:
The swimming rate of Elizabeth is: 50 feet in 10 seconds
So, the swimming rate per second is
⇒Elizabeth swims 5 ft in 1 second.
Similarly,the swimming rate of Jesse is: 110 feet in 20 seconds
So, the swimming rate per second is
⇒Jesse swims 5.5 ft in 1 second.
Also,the swimming rate of Reagan is: 160 feet in 30 seconds
So, the swimming rate per second is
⇒Reagan swims 5.33 ft in 1 second.
By comparing the per second rate of swimming,
5.5 is the greatest of the all rates.
Hence, Jesse swims the fastest with the rate of 5.5 ft in 1 second.