In the week, I study 3 days: Tuesday, Thursday, Friday. I can work on Saturday, Sunday, Monday, Wednesday, full days and the other days I study after school at 4:30 minutes.
I study three days a week: Tuesday, Thursday, and Friday. I can work on Saturdays, Sundays, Mondays, and Wednesdays. All day and other days after school at 16:30
In a week, I studied for three days, Tuesday, Thursday and Friday. I can work all day on Saturday, Sunday, Monday, and the other day, after school, at 16 o'clock. 30 minutes