368.DS The number of boys in a class and the number of the totle of boys and girls who take the course of biology is shown in the form blew, How many is all the boys and girls in the class.
表格 take biology not take biology totle
-- ------------------------------------------------------------------
boy 28
-------------- ----------------------------------------------------------
girl
-----------------------------------------------------------------------
totle 36
1. There are 15 boys who do take biology
2. The girls in the class is twice as many as the totle of boys and girls who do not take biology
[确认]B
================
如果TOTAL 36 是指take biology 的 girls and boys. 我的答案: C作者: tongxun 时间: 2002-12-5 01:56