we know that
1 hour------> 60 minutes
so
= [11:45 am] + 55 min
= [11 h + 45 min + 55 min] am
= [11 h + 100 min] am
= [11 h + (60 + 40) min] am
= [11 h + 60 min + 40 min] am → you know that: 60 min = 1 h
= [11 h + 1 h + 40 min] am
= [12 h + 40 min] → when you get 12, am → pm
= 12:40 pm
the answer is
12:40 pm