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标题: OG13 DS 168题目,求解答,谢谢 [打印本页]

作者: sayyessi    时间: 2013-2-2 07:34     标题: OG13 DS 168题目,求解答,谢谢

168. In a certain business, production index p is directly
proportional to efficiency index e, which is in turn
directly proportional to investment index i'. What is p if i = 70 ?
(1) e = 0.5 whenever i = 60.
(2) p = 2.0 whenever i = 50.

问题1:这个题A is directly proportional to  B  就是成正比的意思吧? 请问下成反比怎么表达啊?
问题2: P= 2 Whenever I = 50 的含义是,当I=50, P为2吧? 还是反之啊?

感谢好心人赐教哦。哈哈
作者: viviansecret    时间: 2013-2-3 07:13

问题1:这个题A is directly proportional to  B  就是成正比的意思吧? 请问下成反比怎么表达啊?


反比的表达是 inverse proportion


问题2: P= 2 Whenever I = 50 的含义是,当I=50, P为2吧? 还是反之啊?



和你理解的一样:当I=50, P=2




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