[求助]一道反复看了几遍也不懂的GRE数学题

zjy1818UID: 2308963

下面这道题为什莫选C呀，我认为这题不就是把1000体积的固体融了往底面积600的盆里灌，怎没就灌出5来了，求解答?谢谢诶（难道我语文不过关）

18. Three solid cubes of lead, each with edges 10

centimeters long, are melted together in a level,

rectangular-shaped pan. The base of the pan has inside

dimensions of 20 centimeters by 30 centimeters, and

the pan is 15 centimeters deep. If the volume of the

solid lead is approximately the same as the volume of

the molted lead, approximately how many centimeters

deep is the melted lead in the pan?

(A) 2.5

(B) 3

(C) 5

(D) 7.5

(E) 9

永乐07UID: 2606877

题意：3个立方体的铅，每个的边长为10cm，放在一个矩形底的容器中融化，容器的底的边长分别为20cm和30cm，高15cm。如果融化掉的与原来的铅的体积一样（就是说铅融化固态和液体时的体积一样），那么这些液态的铅在容器中的高度。
解： 1000×3/600=5
选C

zjy1818UID: 2308963

2# 永乐07
谢谢，没注意到three，悲剧...

yuanmountainUID: 3156578

看来gre数学陷阱不少

urbeautifulmUID: 3128648

答案是选c的吧，是3个1000的熔进底面600的容器，3000/600=5