Question 821941
There are 21 plates of tomato sandwiches, 27 plates of cheese sandwiches, and 12 plates of beef sandwiches on a buffet table. 
If a guest randomly picks a single plate, what is the probability that he gets tomato or cheese sandwiches?
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P(tomato or cheese) = 1 - P(beef)
Ans:: 1 - 12/60 = 4/5 = 0.80
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Cheers,
Stan H.
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A) 0.10
B) 0.25
C) 0.48
D) 0.80