题目信息
If two copying machines work simultaneously at their respective constant rates, how many copies do they produce in 5 minutes?
(1)One of the machines produces copies at the constant rate of 250 copies per minute.
(2)One of the machines produces copies at twice the constant rate of the other machine.
(1)One of the machines produces copies at the constant rate of 250 copies per minute.
(2)One of the machines produces copies at twice the constant rate of the other machine.
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 statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D:EACH statement ALONE is sufficient.
E:Statements (1) and (2) TOGETHER are NOT sufficient.
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正确答案：
E:Statements (1) and (2) TOGETHER are NOT sufficient.
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