杭州交通信息网柴油电脑检测仪:英语简单数学
来源：百度文库 编辑：杭州交通信息网 时间：2024/05/13 02:40:23
after 2 females leave a party , there are twice as many males as females. then 9 males leave and there are twice as many femails as males. The totle number of prople left at the party after the 9 males leave.
谢谢，拜托给过程。特别解释一下这个 twice as many ..as 到底是谁是谁两倍，谢谢～～
谢谢，拜托给过程。特别解释一下这个 twice as many ..as 到底是谁是谁两倍，谢谢～～
twice as many males as females男人是女人的两倍多。
从后面推起，原来男为女的2倍，离开九人后男为女的一半，设男为X个女为Y个，9=3/2（Y-2），Y=8
Y-2=X/2，所以X=12。
twice as many males as females男人是女人的两倍多。
从后面推起，原来男的是女的2倍，离开九人后男的是女的一半，设男为X个女为Y个，9=3/2（Y-2），Y=8
Y-2=X/2，所以X=12。