If Patrick left home at 4:20 p.m. on Sunday and returned 36.3 hours later, we can add 36.3 hours to the time he left to find the time he arrived home.
First, we need to convert 36.3 hours into days and hours. Since there are 24 hours in a day, we can divide 36.3 by 24 to get the number of days, and take the remainder to get the number of hours:
36.3 hours ÷ 24 hours/day = 1 day and 12.3 hours
So, Patrick returned 1 day and 12.3 hours later.
Adding 12.3 hours to the time he left at 4:20 p.m. on Sunday, we get:
4:20 p.m. + 12.3 hours = 4:20 p.m. + 12 hours + 0.3 hours
= 4:20 a.m. on Tuesday
Therefore, Patrick arrived home at 4:20 a.m. on Tuesday.