SOLUTION: A resort guarantees that the average temperature over the period of Friday, Saturday, and Sunday will be exactly 80 degrees, or else each guest pays only half price for the facilit

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Question 1079709: A resort guarantees that the average temperature over the period of Friday, Saturday, and Sunday will be exactly 80 degrees, or else each guest pays only half price for the facilities. If the temperature on Friday and Saturday were 90 degrees and 82 degrees respectively, what must the temperature be on Sunday so that the resort does not lose half of its revenue?
Found 2 solutions by jorel1380, ikleyn:
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
3*80=240
240-82-90=68
The temperature must be 68 degrees on Sunday to maintain an average of 80. ☺☺☺☺

Answer by ikleyn(52813) About Me  (Show Source):
You can put this solution on YOUR website!
.
It recalls me an advertising from "Sweet tomatoes", popular vegetable restaurant: 

    "If it will be rainy, come and get the discount of 20%.
     If it will be sunny, come and get the discount of 20% "