作者piwei (what happen)
看板GMAT
标题[计量] pp1-ds-214
时间Fri Jun 27 05:20:42 2008
The cost of a square slab is proportional to its thickness and also
proportional to the square of its length. What is the cost of a square slab
that is 3 meters long and 0.1 meter thick?
1) the cost of s square slab that is 2 meters long and 0.2 meter thick is$160
more than the cost of a square slab that is 2 meters long and 0.1 meter thick.
2)The cost of a square slab that is 3 meters long and 0.1 meter thick is$200
more than the cost of a square slab that is 2 meters long and 0.1 meter thick.
答案是D
我觉的是E(天差地远的)
麻烦帮忙解答一下 头都快想破掉了
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 218.168.159.195