Answer:
75 minutes
Explanation:
The minutes worked by Sarah on Monday = 450 minutes
On Tuesday, she worked half the number of minutes she worked on Monday.
[tex]\text{The minutes worked on Tuesday = }\frac{\text{450}}{2}=225\text{ minutes}[/tex]Thus, the number of minutes more she worked on Wednesday than Tuesday is:
[tex]\begin{gathered} \text{Minutes on Wednesday}-\text{Minutes on Tuesday}=300-225 \\ =75\text{ minutes} \end{gathered}[/tex]Sarah worked 75 minutes more on Wednesday than Tuesday.