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求教一道PREP上的数学题
Of the 60 animals on a certain farm, 2/3are either pigs or cows. How many animals are cows?(1)The farm has more than twice as many cows as it has pigs
(2)The farm has more than 12 pigs
不知道我的理解对不对:农场有60只动物,其中2/3不是猪就是牛,请问牛有多少头?
(1)农场的猪/牛大于等于2,(2)农场的猪大于12头
正确答案说1、2一起就可以解答,但我当时选的E,求XDJM们帮我解释一下为什么选C呢?
先拜谢过~ |
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