Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Nov 2211:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Nov 23
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Nov 2510:00 AM EST
-11:00 AM EST
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
63% (02:31) correct
37%
(02:39)
wrong
based on 2493
sessions
History
Date
Time
Result
Not Attempted Yet
A welder needs to construct a closed cube-shaped tank with a volume of 1 million liters. If the welder has access to only 4x2 meter sheets of metal that can be cut, and 1 cubic meter is equivalent to 1,000 liters, how many sheets of metal will be required to construct the tank?
A. 92
B. 90
C. 82
D. 78
E. 75
A. 92
B. 90
C. 82
D. 78
E. 75
Experience GMAT Club Test Questions
Yes, you've landed on a GMAT Club Tests question
Craving more? Unlock our full suite of GMAT Club Tests here
Want to experience more? Get a taste of our tests with our free trial today
Rise to the challenge with GMAT Club Tests. Happy practicing!
16 Jan 2012, 13:30
Kudos
Bookmarks
Official Solution:
A welder needs to construct a closed cube-shaped tank with a volume of 1 million liters. If the welder has access to only 4x2 meter sheets of metal that can be cut, and 1 cubic meter is equivalent to 1,000 liters, how many sheets of metal will be required to construct the tank?
A. 92
B. 90
C. 82
D. 78
E. 75
Since 1 cubic meter = 1,000 liters, then 1 million liter tank \(= \frac{1,000,000}{1,000} = 1,000\) cubic meter tank.
\(1,000\) cubic meter tank, means that each side of the cube-shaped tank is 10 meters long (since 10^3 = 1,000).
The surface area of this tank would be \(\text{ (number of faces of a cube)} *\text{ (area of each face)} =6*10^2= 600\) square meters.
Since each sheet is \(4*2=8\) square meters, then to cover 600 square meters of area, \(\frac{600}{8}=75\) sheets will be needed.
Answer: E
A welder needs to construct a closed cube-shaped tank with a volume of 1 million liters. If the welder has access to only 4x2 meter sheets of metal that can be cut, and 1 cubic meter is equivalent to 1,000 liters, how many sheets of metal will be required to construct the tank?
A. 92
B. 90
C. 82
D. 78
E. 75
Since 1 cubic meter = 1,000 liters, then 1 million liter tank \(= \frac{1,000,000}{1,000} = 1,000\) cubic meter tank.
\(1,000\) cubic meter tank, means that each side of the cube-shaped tank is 10 meters long (since 10^3 = 1,000).
The surface area of this tank would be \(\text{ (number of faces of a cube)} *\text{ (area of each face)} =6*10^2= 600\) square meters.
Since each sheet is \(4*2=8\) square meters, then to cover 600 square meters of area, \(\frac{600}{8}=75\) sheets will be needed.
Answer: E
16 Jan 2012, 14:26
Kudos
Bookmarks
Hi, there! I'm happy to contribute here!
The question say: A welder received an order to make a 1 million liter cube-shaped tank. (1 cubic meter = 1,000 liters)
In other words, the tank is going to have a volume of 1000 cubic meters. That would equal 1 million liters.
A cube with a volume of 1000 cubic meters must be (10 meters) x (10 meters) x (10 meters).
The question doesn't specify whether this tank should have a closed top or an open top. (The real GMAT is good about specifying things like that.) Here, we are going to assume a closed top, only because if the top is open, we don't use enough metal --- we get an answer smaller than any of the answer choices. A closed-top cube, a full cube, has 6 sides, each of which is (10 meters) x (10 meters). That's a total surface area of 600 sq m.
The question tells us: he has only 4x2 meter sheets of metal that can be cut.
Each sheet has an area of 8 sq m. How many of these need to fill up 600 sq m? 600/8 = 75. He needs 75 sheets.
Answer = E
It appears that both Mr. Bunuel and I got the same answer, different from the OA you posted. Perhaps you miscopied.
Please let me know if you have any questions on this.
Mike
The question say: A welder received an order to make a 1 million liter cube-shaped tank. (1 cubic meter = 1,000 liters)
In other words, the tank is going to have a volume of 1000 cubic meters. That would equal 1 million liters.
A cube with a volume of 1000 cubic meters must be (10 meters) x (10 meters) x (10 meters).
The question doesn't specify whether this tank should have a closed top or an open top. (The real GMAT is good about specifying things like that.) Here, we are going to assume a closed top, only because if the top is open, we don't use enough metal --- we get an answer smaller than any of the answer choices. A closed-top cube, a full cube, has 6 sides, each of which is (10 meters) x (10 meters). That's a total surface area of 600 sq m.
The question tells us: he has only 4x2 meter sheets of metal that can be cut.
Each sheet has an area of 8 sq m. How many of these need to fill up 600 sq m? 600/8 = 75. He needs 75 sheets.
Answer = E
It appears that both Mr. Bunuel and I got the same answer, different from the OA you posted. Perhaps you miscopied.
Please let me know if you have any questions on this.
Mike
