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OpenStudy (anonymous):
Lenny’s favorite radio station has this schedule: news: 13 min. commercials: 2 min. music: 45 min. If Lenny chooses a time of day at random to turn on the radio to his favorite station, what is the probability that the news will be on? A. 3/4 B. 13/45 C. 1/30 D. 13/60
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OpenStudy (ohmaigosshh):
13/60 ...
OpenStudy (anonymous):
how
OpenStudy (ohmaigosshh):
Because 3/4th is the percentage of music... 45/60.... It wouldn't be 13/45 because it's out of 60 minutes, not 45... and it wouldn't be 1/30 either, 1\30 is the percentage for the commercials. However you're looking at 13 minutes out of an hour. So that's why it's 13/60...
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