Question
In a city 30% of the houses and 60% of the condominiums use natural gas for heating. 65% of the residences in the city are
In a city 30% of the houses and 60% of the condominiums use natural gas for heating.
65% of the residences in the city are houses and the rest are condominiums.
a.
If a residence is selected at random from this city, what is the probability it uses natural
gas for heating?
b.
If a residence uses natural gas for heating, what is the probability it is a condominium?
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Elementary Algebra
Authors: Tom Carson, Bill E Jordan
4th Edition
0321916042, 9780321916044
