求助陈向东 书中一道题 望各位指点

EMMA102UID: 2865351

the diagonal of the floor of a rectangular closet is 7.5feet. the shorter side of the closet is 4.25 feet. what is the area of the closet in square feet ?  这道题是227页第64题，

lz80521UID: 2756488

见我此贴的回复：https://bbs.gter.net/thread-1260052-1-1.html

EMMA102UID: 2865351

2# lz80521
恩 非常感谢 还有一道麻烦帮看一下
A bookshelf contains 16 books writen in TFrench and 8 books written in Italian and no other books.
75% of the books written in  Franch and 50% of the books written in Italian are removed from the bookshelf.

      the proportion of the original number of books remaining on the shelf

我算来算去都是1啊 可能是哪理解错了，还有考试的时候有计算器吗

lz80521UID: 2756488

the proportion of the original number of books remaining on the shelf
我的理解是，books remaining on the shelf占原来所有书的比例是多少，你看对不对。

EMMA102UID: 2865351

4# lz80521

可不可以这么说 the proportion of A of B  是B在A 中所占的比例

lz80521UID: 2756488

4# lz80521  

可不可以这么说 the proportion of A of B  是B在A 中所占的比例
EMMA102 发表于 2011-5-1 18:32

可以。