Five friends are standing in line for the opening of a show. They are in line according to their arrival. Shreya arrived 3 minutes after Sachin. Roy took his place in line at 9:01 P.M. He was 1 minute behind Reena and 7 minutes ahead of Shreya. The first person arrived at 9:00 P.M. Babu showed up 6 minutes after the first person. List the time of each person’s arrival.
(a) Whose arrival information helped you determine each person’s arrival time?
(b) Can you determine the order without the time?
(c) List the friends’ order of arrival from the earliest to the last.