Answer:
25 minutes
Step-by-step explanation:
median before = 53
median after = 28
53-28 = 25
Other info
The median marks the mid-point of the data and is shown by the line that divides the box into two parts (sometimes known as the second quartile). Half the scores are greater than or equal to this value and half are less.
The difference of the set of median shown = 25 minutes.
