If the day before yesterday was Sunday that would mean that today would be Tuesday so one week from today would be still be Tuesday but one week later Hope this helps :)
Given Problem to be solved : If the day before yesterday was sunday? What day is one week from today.
Let's analyze this given situation: First the days before yesterday is => SUnday So meaning yesterday is => Monday And today is => Tuesday.
Now, what day will be one week from now, we all know that 1 week has 7 days. SO let's start counting: 1. Wednesday 2. Thursday 3. Friday 4. Saturday 5. Friday 6. Sunday 7. Monday. Thus, the day is MOnday