SOLUTION: The Ivy College Technology Center reports that 80% of the incoming freshmen purchase a printer from the Center, 35% buy a laptop from the Center, and that 60% of those who buy a la

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Question 465432: The Ivy College Technology Center reports that 80% of the incoming freshmen purchase a printer from the Center, 35% buy a laptop from the Center, and that 60% of those who buy a laptop from the Center also buy a printer there. What is the probability that a randomly selected freshman student
a) purchased a laptop computer and a printer from the Center?
b) purchased a laptop computer or a printer from the Center?
c) purchased a laptop at the Center, given that (s)he purchased a printer there?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
a)80%+35%-60%=1.15-.6=.55 who buy both
b)80% buy a printer. 40% of those who buy a laptop do not buy a printer, so .35x.40 or .14 buy a laptop alone, so 94% buy either a printer or laptop.
c).55x.80=all who bought a laptop, given the (s)he bought a printer=44%..