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Question 455663: A disk jockey must play 14 commercial slots during 1 hour of a raido show.Each commercial is eaith 30 seconds or 60 seconds long. If the total commercial time during a 1 hour show is 11 minutes, how many 30 second commericals and how many 60 second commercials were played? in that hour?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A disk jockey must play 14 commercial slots during 1 hour of a raido show.Each commercial is either 30 seconds or 60 seconds long. If the total commercial time during a 1 hour show is 11 minutes, how many 30 second commericals and how many 60 second commercials were played? in that hour?
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Slot equation: t + s = 14 slots
Time equation:30t+60s = 11*60 seconds
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Divide thru the Time equation by 30
t + s = 14
t + 2s= 22
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Subtract and solve for "s":
s = 8 (# of sixty-second commercials played)
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t + 8 = 14
t = 6 (# of thirty0second commercials played)
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Cheers,
Stan H.
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