In a town, 30% of the households own a dog, 20% own a cat, and 10% own both a dog and a cat. If we select a household at random, the chance

Question

In a town, 30% of the households own a dog, 20% own a cat, and 10% own both a dog and a cat. If we select a household at random, the chance that they own a dog or a cat is __________.
O 50%.
O 60%.
O 40%.

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Gianna 3 weeks 2021-09-27T04:35:41+00:00 2 Answers 0

Answers ( )

    0
    2021-09-27T04:36:48+00:00

    Answer:

    40%

    Step-by-step explanation:

    30% + 20% – 10%

    = 40%

    0
    2021-09-27T04:37:34+00:00

    Answer:

    40%

    Step-by-step explanation:

    A- have a dog

    P(A)=30%

    B- have a cat

    P(B)=20%

    Have both pats

    P(A&B)=10%

    We want to know probability of (A or B), so we have:

    P(AorB)=P(A)+P(B)-P(A&B)=30%+20%-10%=40%

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45:7+7-4:2-5:5*4+35:2 =? ( )