Answer:
Adam
Explanation:
Speed is calculated with the formula distance over time.
Convert all measurements to the same unit: ft/s.
Speed of Frank:
d/t
=11/s
Speed of Emily:
d/t
=86/10
=8.6/s
Speed of Adam:
There are 5280 feet in a mile.
d/t
=5280/388
=13.6/s
Speed of Noah:
There are 60 seconds in a minute.
d/t
=600/60
=10/s
Adam runs the fastest because 13.6 > 11 > 10 > 8.6.