Data Sufficiency
试题详情
题目：
One kilogram of a certain coffee blend consists of x kilogram of type I coffee and y kilogram of type II coffee. The cost of the blend is C dollars per kilogram, where C = 6.5x + 8.5y. Is x ＜ 0.8?
(1) y ＞ 0.15
(2) C ≥ 7.30
慴整选项:
答案:
B
