回复：回复：I'm careless,410 not 411,but the inequolity is good.we can

Nonsense,I'm not right ,I have to say something.if the question has be changed to at least 4 questions, how to do?
Using the inequolity ,we get x=(410-300)/2=55.

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• 回复：回复：回复：I'm careless,410 not 411,but the inequolity is good.we -commentate- ♂ (94 bytes) () 06/24/2010 postreply 10:11:47

• 回复：回复：回复：回复：I'm careless,410 not 411,but the inequolity is good. -jinjing- ♀ (204 bytes) () 06/27/2010 postreply 14:37:06