Question

A student runs 100 meters in 11 seconds. What is the speed of the student?

speed = distance over time; 1 mile = 1609 meters

Answer 1

all you must do is $\frac{100}{11}$
that equals 9.09 repeating. round and you'll get 9m/second

hope this helped :D

Answer 2

100m= 0.621371 miles 11 seconds = 0.0030556 hours So with the significant digits the answer would be 20.3 miles/hour..