Alexis counted 16 commercials while watching 30 min of tv. at this rate, how many commercials would play in a day

There are several information’s that are actually of immense importance, already given in the question. Based on these information’s the answer to the question can be easily deduced.We already know that 
24 hours = (24 * 60 ) minutes
               = 1440 minutes
Then
In 30 minutes the number of commercials shown =16
so 
In 1440 minutes the number of commercials shown = (16/30) * 1440
                                                                                    = 768
So the number of commercials shown in 24 hours is 768.

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