math 157
posted by Rmz .
in a subdivision, 67 perecent of the homes have detached garages, 32 perecent have a patio, and 13 percent have both. What is the probability that a house has a patio if you know that it has a detached garage?
would it be 32/67?

Good guess. Only 13% have BOTH, so it is actually 13/67.

If 13% (.13) have both detached garages and patios, isn't that the probability?
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