Difference between brother and sister: The sister is 75 weeks (or 525 days) older than the brother.
Sister's birthday: The sister was born on Tuesday.
Brother's date of birth: Since the brother was born 525 days later than the sister, we have to go forward 525 days to find the brother's date of birth.525 ÷ 7 = 75 complete weeks. Remaining 0 days. That is, the brother and sister were born on the same day. Therefore, the brother was born on Tuesday.
Difference between you and your brother: You are 562 days younger than your brother.
Your birthday: Your brother was born on a Tuesday. Since you are 562 days younger, you have to go back 562 days from Tuesday. Finding the remainder of the days: 562 ÷ 7 = 80 weeks, remainder 2 days.
Final calculation: Tuesday + 2 = Thursday
Therefore, you were born on Thursday.
