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aniked [119]
3 years ago
8

In a class of 25 students, 15 of them have a cat,

Mathematics
2 answers:
erastova [34]3 years ago
3 0

So 3 have no pets, so 25 - 3 = 22 students have a pet.

There are 15 cats and 16 dogs so 15 + 16 = 31.

And then 31 - 22 = 9. The 9 means that 9 students have both pets.

So the probability is 9/25.

Tatiana [17]3 years ago
3 0

Answer:

number of students who have cat and dog

= y

= 9

P( student chosen has a dog and cat )

= 9/25

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