2019 AMC 8 Problems/Problem 15
Problem 15
On a beach people are wearing sunglasses and
people are wearing caps. Some people are wearing both sunglasses and caps. If one of the people wearing a cap is selected at random, the probability that this person is is also wearing sunglasses is
. If instead, someone wearing sunglasses is selected at random, what is the probability that this person is also wearing a cap?
Video Solution
https://youtu.be/6xNkyDgIhEE?t=252
Solution 1
The number of people wearing caps and sunglasses is
. So then 14 people out of the 50 people wearing sunglasses also have caps.
Video Solution
https://www.youtube.com/watch?v=gKlYlAiBzrs ~ MathEx
Another video - https://www.youtube.com/watch?v=afMsUqER13c
See Also
2019 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 14 |
Followed by Problem 16 | |
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