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Mathematics 18 Online
OpenStudy (anonymous):

help!

OpenStudy (anonymous):

Ivy has 4 tiles with pictures of plants and 5 tiles with pictures of animals. Ivy keeps all the tiles on a mat with the pictures hidden and mixes them up. She then turns one tile face up and finds the picture of a plant on it. She removes this tile from the mat and turns over another tile without looking. What is the probability that the second tile that Ivy turns over has a plant on it? 37.5% 44.4% 60.0% 80.0%

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (michele_laino):

hint: we have three favorable outcomes, and 8 possible outcomes

OpenStudy (anonymous):

so in the pile there are 3plant tiles and 5 animal tile left after she picks the first one. thats a 3/8 chance for a plant tile, which is 37.5%

OpenStudy (anonymous):

3/8 @Michele_Laino

OpenStudy (anonymous):

3/8 because there are 3 plant tiles, and 8 total

OpenStudy (michele_laino):

correct!

OpenStudy (anonymous):

so its 37.5%?

OpenStudy (michele_laino):

yes!

OpenStudy (anonymous):

ok!

OpenStudy (michele_laino):

:)

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