Answer:
Steven is faster than Michelle by covering 0.64 meters more per second than that of Michelle.
Step-by-step explanation:
Given:
Steven swam 200 m in 25.7 seconds while Michelle finished in 28 seconds.
So, speed of Steven is, [tex]S_{Steven}=\frac{Distance}{time}=\frac{200}{25.7}=7.78\ m/s[/tex]
Speed of Michelle is, [tex]S_{Michelle}=\frac{Distance}{time}=\frac{200}{28}=7.14\ m/s[/tex]
Now, to find how much faster did Steven swim than Michelle, we need to get the difference between their speeds.
Speed of Steven - Speed of Michelle
[tex]7.78-7.14[/tex]
[tex]=0.64\ m/s[/tex]
So, Steven is faster than Michelle by covering 0.64 meters more per second than that of Michelle.