Answer: he got home at 3:05 pm!
Step-by-step explanation:
working backwards from the time stamp 5:56pm, we can just subtract the time he spent gaming and doing chores:
5:56
-0:54 mins games
-1:00 cleaning
-0:57 for homework= the time he got home, but lets make it easier!
54+57=111, in total, that's 1:51 time wise, so that simplifies it a little, be we can simplify it further, by adding the hour spent cleaning.
1:51 on homework n games + 1:00 on cleaning = 2:51 spent on home stuff in general
so lets go back to our subtraction:
5:56 pm -time stamp after all his chores
-2:51 spent on home stuff
= 3:05 pm the time he left school