16, this is something you will learn in grade 3
markt532: Call center hours vary from place to place, but most are open 24 hours and offer 3 shifts 8am-4pm, 4pm-12am, 12am-8am.
12am to 4pm is 16 hours.
24
It is 24 hours.8am to 8pm = 12 hours.8pm to 8am = 12 hours.2 x 12 = 24.
Seven hours !
12 hours
18 hours
21
17
7
21