|
 
- 精华
- 0
- 积分
- 1630
- 经验
- 1630 点
- 威望
- 162 点
- 金钱
- 162 ￥
- 魅力
- 162
|
求解一道GWD数学题！！！！！！！！！！！！！
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
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
答案是B 求做法！！！！！！！！！！ |
|
