SOLUTION: A local radio station is selling airtime spots to advertisers for the upcoming week. The station charges $150 for one of the 85 30-second spots, and $270 for one of the 45 60-seco

Question 1190479: A local radio station is selling airtime spots to advertisers for the upcoming week. The station charges $150 for one of the 85 30-second spots, and $270 for one of the 45 60-second spots. Which of the following expressions gives the total amount of money, in dollars, collected from selling all of the 60-second spots, and S of the 30-second spots?
a) 150S+12,150
b) 150S+270
c) 85S+12,150
d) 45S+10,000
e) S+150
Answer by math_tutor2020(3817) (Show Source): You can put this solution on YOUR website!

S = number of 30-second ad slots sold
150S = amount of money collected from those ads (ignore the 60 second ads)

Now we consider the longer ad length.
There are 45 ads in length of 60 seconds each
If it costs $270 per ad of this longer time length, then the radio station pulls in 45*270 = 12,150 dollars

In total, the station pulls in 150S + 12,150 dollars from both ad types combined.

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