Josue H. answered 01/24/18
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Physics, Calc AB/BC, SAT Math, ACT Math, IB Math, Alg I/II, Trig
If you arrived to work at 12:30 pm and left at 2:00 pm, this is how you would find the time that has passed.
2:00 pm can also be written as 14:00.
14:00 - 12:30 =
Following this we have to regroup.
13:60 - 12:30=
Notice how 14:00 is the same as 13:60
13:60 - 12:30= 1:30 ---> 1 hour and 30 minutes have passed.