Last visit was: 01 May 2026, 18:55 It is currently 01 May 2026, 18:55
Home
Messages
Tests
Schools
Events
Close
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
Your Progress

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
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 01 May 2026
Posts: 110,001
Own Kudos:
812,342
 [4]
Given Kudos: 105,976
Products:
GMAT Club Tests Forum Quiz
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 110,001
Kudos: 812,342
 [4]
At a metal rolling factory, if a iron bar of square cross-section with 24 Jun 2022, 11:30
Kudos
Add Kudos
4
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

55% (hard)

Question Stats:

57% (02:14) correct 43% (02:47) wrong based on 47 sessions

History

Date
Time
Result
Not Attempted Yet
At a metal rolling factory, if a iron bar of square cross-section with an area of 4 square foot is moving continuously through a belt conveyor at a constant speed of 360 feet per hour, how many seconds does it take for a volume of 8.4 cubic foot of the iron bar to move through the conveyor?

(A) 21
(B) 22
(C) 24
(D) 27
(E) 30
ShowHide Answer
Official Answer
A
avatar
err
avatar
Joined: 08 Dec 2021
Last visit: 19 Dec 2022
Posts: 6
Given Kudos: 13
Posts: 6
Kudos: 0
At a metal rolling factory, if a iron bar of square cross-section with 24 Jun 2022, 18:41
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
At a metal rolling factory, if a iron bar of square cross-section with an area of 4 square foot is moving continuously through a belt conveyor at a constant speed of 360 feet per hour, how many seconds does it take for a volume of 8.4 cubic foot of the iron bar to move through the conveyor?

(A) 21
(B) 22
(C) 24
(D) 27
(E) 30
Show more
I didn't understand the question
User avatar
ashishpathak
User avatar
Joined: 01 Jul 2021
Last visit: 07 Feb 2025
Posts: 28
Own Kudos:
13
Given Kudos: 114
Location: India
Schools: ISB '25 (A)
GMAT 1: 620 Q42 V34
GMAT 2: 650 Q46 V34
GPA: 2.57
WE:Military Officer (Aerospace and Defense)
Schools: ISB '25 (A)
GMAT 2: 650 Q46 V34
Posts: 28
Kudos: 13
At a metal rolling factory, if a iron bar of square cross-section with 24 Jun 2022, 19:13
Kudos
Add Kudos
Bookmarks
Bookmark this Post
don't we need the length of the conveyer belt?
User avatar
ThatDudeKnows
User avatar
Joined: 11 May 2022
Last visit: 27 Jun 2024
Posts: 1,070
Own Kudos:
1,031
Given Kudos: 79
Expert
Expert reply
Posts: 1,070
Kudos: 1,031
At a metal rolling factory, if a iron bar of square cross-section with 24 Jun 2022, 21:01
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Bunuel
At a metal rolling factory, if a iron bar of square cross-section with an area of 4 square foot is moving continuously through a belt conveyor at a constant speed of 360 feet per hour, how many seconds does it take for a volume of 8.4 cubic foot of the iron bar to move through the conveyor?

(A) 21
(B) 22
(C) 24
(D) 27
(E) 30
Show more

err
ashishpathak

We are talking about a square rod. The dimensions of the rod are 2ft*2ft*whateverthelenghtoftherodis. The 2ft*2ft is what gives us the 4 square foot cross section. If we want a volume of 8.4 cubic feet, we will need 2.1 feet of length (volume = lwh = 2.1(2)(2)). Okay, 2.1 feet of length.

360 feet per hour is 6 feet per minute, which is 1 foot every 10 seconds. We need 21 seconds to get 2.1 feet.

Answer choice A.
avatar
err
avatar
Joined: 08 Dec 2021
Last visit: 19 Dec 2022
Posts: 6
Given Kudos: 13
Posts: 6
Kudos: 0
At a metal rolling factory, if a iron bar of square cross-section with 24 Jun 2022, 21:08
Kudos
Add Kudos
Bookmarks
Bookmark this Post
ThatDudeKnows
Bunuel
At a metal rolling factory, if a iron bar of square cross-section with an area of 4 square foot is moving continuously through a belt conveyor at a constant speed of 360 feet per hour, how many seconds does it take for a volume of 8.4 cubic foot of the iron bar to move through the conveyor?

(A) 21
(B) 22
(C) 24
(D) 27
(E) 30

err
ashishpathak

We are talking about a square rod. The dimensions of the rod are 2ft*2ft*whateverthelenghtoftherodis. The 2ft*2ft is what gives us the 4 square foot cross section. If we want a volume of 8.4 cubic feet, we will need 2.1 feet of length (volume = lwh = 2.1(2)(2)). Okay, 2.1 feet of length.

360 feet per hour is 6 feet per minute, which is 1 foot every 10 seconds. We need 21 seconds to get 2.1 feet.

Answer choice A.
Show more

Thank you. It wasn't clear to me earlier that it's a continuous rod, thought they were talking about a shape, which cut diagonally will have square cross-section. Any suggestion to avoid such confusion in exam?
User avatar
ThatDudeKnows
User avatar
Joined: 11 May 2022
Last visit: 27 Jun 2024
Posts: 1,070
Own Kudos:
1,031
Given Kudos: 79
Expert
Expert reply
Posts: 1,070
Kudos: 1,031
At a metal rolling factory, if a iron bar of square cross-section with 24 Jun 2022, 21:14
Kudos
Add Kudos
Bookmarks
Bookmark this Post
err
ThatDudeKnows
Bunuel
At a metal rolling factory, if a iron bar of square cross-section with an area of 4 square foot is moving continuously through a belt conveyor at a constant speed of 360 feet per hour, how many seconds does it take for a volume of 8.4 cubic foot of the iron bar to move through the conveyor?

(A) 21
(B) 22
(C) 24
(D) 27
(E) 30

err
ashishpathak

We are talking about a square rod. The dimensions of the rod are 2ft*2ft*whateverthelenghtoftherodis. The 2ft*2ft is what gives us the 4 square foot cross section. If we want a volume of 8.4 cubic feet, we will need 2.1 feet of length (volume = lwh = 2.1(2)(2)). Okay, 2.1 feet of length.

360 feet per hour is 6 feet per minute, which is 1 foot every 10 seconds. We need 21 seconds to get 2.1 feet.

Answer choice A.

Thank you. It wasn't clear to me earlier that it's a continuous rod, thought they were talking about a shape, which cut diagonally will have square cross-section. Any suggestion to avoid such confusion in exam?
Show more

I don't think GMAC would have a question like this without a diagram to show what they're describing. So, carry on!!
Moderators:
Bunuel
Math Expert
110001 posts
Krunaal
Tuck School Moderator
852 posts