Friday, September 10, 2010

One kilogram of a certain coffee brand consists of x kilograms of Type I coffee and y kilograms of Type II coffee. The cost of the brand is C dollars per kilogram, where C = 6.5x + 8.5y. Is x '<' 0.8?

1) y '>'= 0.15

2) C '>'= 7.30





x+y=1
Statement 1 implies that x could be less, equal or more than 0.8; not sufficient.

Statement 2 certainly is.

The correct answer is B

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