The cost of a square slab is proportional to its thickness : DS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 23 Jan 2017, 05:11

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# The cost of a square slab is proportional to its thickness

Author Message
Manager
Joined: 09 Feb 2006
Posts: 90
Location: Prague, CZ
Followers: 1

Kudos [?]: 50 [0], given: 0

The cost of a square slab is proportional to its thickness [#permalink]

### Show Tags

16 Jul 2006, 06:52
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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 a 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.
Senior Manager
Joined: 12 Mar 2006
Posts: 366
Schools: Kellogg School of Management
Followers: 3

Kudos [?]: 70 [0], given: 3

### Show Tags

16 Jul 2006, 07:13
D

in both cases we can get eqs to solve for const in l^2*thk*Const

so we can calculate the ans
VP
Joined: 07 Nov 2005
Posts: 1131
Location: India
Followers: 5

Kudos [?]: 41 [0], given: 1

### Show Tags

18 Jul 2006, 00:35
Got D.

On solving either of the statements, we can get the value of the constant and can then find the required cost of the slab.
SVP
Joined: 30 Mar 2006
Posts: 1737
Followers: 1

Kudos [?]: 78 [0], given: 0

### Show Tags

18 Jul 2006, 02:49
D.
Given

C = K*W*L^2 where K is the constant

1) K*W1*L1^2 - K*W2*L2^2 = 160
Can find K from here.
2) similar to 1

Hence D
18 Jul 2006, 02:49
Display posts from previous: Sort by