Discussion of Question with ID = 067 under Clocks-and-Calendars

Radhika is 93 weeks and 7 days older than me, whereas Rajiv is 24 weeks and 10 days older than Radhika. If Rajiv was born on a Thursday, on which day of the week was I born?

Rajiv is 93 + 24 = 117 weeks and 7 + 10 = 17 days older than me. Weeks are in multiples of 7 days. So we can ignore them. We can deal with the 17 days alone. Since 17 = 2 X 7 + 3, the excess days are 3. So we can count the day to Thursday + 3 = Sunday.