Hi Bunuel! Thank you for the solution.
I have a doubt in such questions and would really appreciate if you could help clarify the same or share any similar examples with me.
I calculated the LCM and got 12, however, I was unsure of the two following things-
1. Should I start counting days from Monday or Tuesday?
2. Will the 12th day be the answer or the day right after the 12th day ends (Sunday) will be the answer?
Thank you
Bunuel
Official Solution:Deborah and Mike regularly visit the university library every 3 and 4 days, respectively. If they both were at the library on a Monday, on which day of the week will they both be in the library together the next time? A. Wednesday
B. Thursday
C. Friday
D. Saturday
E. Sunday
Deborah and Mike will meet in the library again after 12 days, as it is the least common multiple of their respective visiting intervals, 3 and 4 days. Therefore, their next encounter will occur on a Saturday, which is 12 days after the initial Monday meeting.
Answer: D