Answer:
100/7.5 - B
Explanation:
d is a distance quantity, v is a rate measured as distance/time. So, d/v gives us distance/distance/time, or just time.
Let's see if the basic units of our given information and the desired answer are consistent or not.
We can see that the distance units are consistent (meters) and that the time units are consistent (seconds) Since all units are consistent, there is no need to convert anything.
In conclusion, this is the calculation that will give us the estimated duration of Tessa's dash in seconds:
100/7.5