Answer:
Millie has £7.50 to spend each day.
Explanation:
Millie works 8 hours on Saturday and earns £6.50 an hour.
Total earnings =

Her bus fare to work costs £2.75 and she also spends £4.25 on her lunch.
Total remaining pay =

Millie allocates an equal amount of £45 to the remaining six days of the week.
This becomes =

So, Millie has £7.50 to spend each day.
Note: you are doing this wrong.