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anonymous

  • one year ago

At Sanger’s auto garage, 40% of the cars brought in for service need an oil change. Of the cars that need oil changes, 30% also need a tire rotation. Find the probability that a car that comes into the auto garage needs both an oil change and a tire rotation.

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  1. anonymous
    • one year ago
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    In probability of usually means multiplication. What is 30% of 40%?

  2. anonymous
    • one year ago
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    30% of the 40% that require the thing = 0.3*0.4

  3. anonymous
    • one year ago
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    how about this .3=P(A and B)/.4 => P(A and B) = .3*.4 = .12

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