NEW HERE? LEARN MORE
closeclose
Last visit was: 24 Apr 2024, 04:41 It is currently 24 Apr 2024, 04:41
Decision Tracker
My Rewards
New posts
New comers' posts

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

At a metal rolling factory, if a iron bar of square cross-section with

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 92901
Own Kudos [?]: 618706 [4]
Given Kudos: 81586
Send PM
CAT Tests Forum Quiz Mode
At a metal rolling factory, if a iron bar of square cross-section with [#permalink] New post   24 Jun 2022, 11:30
4
Bookmarks
Expert Reply
00:00
A
B
C
D
E

Difficulty:

55% (hard)

Question Stats:

57% (02:17) correct 43% (02:50) wrong based on 44 sessions
Hide Show timer Statistics
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
B
err
Intern
Intern
Joined: 08 Dec 2021
Posts: 6
Own Kudos [?]: 0 [0]
Given Kudos: 13
Send PM
Re: At a metal rolling factory, if a iron bar of square cross-section with [#permalink] New post   24 Jun 2022, 18:41
Bunuel wrote:
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

I didn't understand the question
User avatar
B
ashishpathak
Intern
Intern
Joined: 01 Jul 2021
Posts: 29
Own Kudos [?]: 10 [0]
Given Kudos: 114
Location: India
Schools: ISB '24 (A)
GMAT 1: 620 Q42 V34
GMAT 2: 650 Q46 V34
GPA: 2.57
WE:Military Officer (Aerospace and Defense)
Send PM
Re: At a metal rolling factory, if a iron bar of square cross-section with [#permalink] New post   24 Jun 2022, 19:13
don't we need the length of the conveyer belt?
User avatar
G
ThatDudeKnows
Tutor
Joined: 11 May 2022
Posts: 1092
Own Kudos [?]: 696 [0]
Given Kudos: 81
Send PM
Re: At a metal rolling factory, if a iron bar of square cross-section with [#permalink] New post   24 Jun 2022, 21:01
Expert Reply
Bunuel wrote:
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.
avatar
B
err
Intern
Intern
Joined: 08 Dec 2021
Posts: 6
Own Kudos [?]: 0 [0]
Given Kudos: 13
Send PM
At a metal rolling factory, if a iron bar of square cross-section with [#permalink] New post   24 Jun 2022, 21:08
ThatDudeKnows wrote:
Bunuel wrote:
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?
User avatar
G
ThatDudeKnows
Tutor
Joined: 11 May 2022
Posts: 1092
Own Kudos [?]: 696 [0]
Given Kudos: 81
Send PM
Re: At a metal rolling factory, if a iron bar of square cross-section with [#permalink] New post   24 Jun 2022, 21:14
Expert Reply
err wrote:
ThatDudeKnows wrote:
Bunuel wrote:
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?


I don't think GMAC would have a question like this without a diagram to show what they're describing. So, carry on!!
GMAT Club Bot
gmatclubot
Re: At a metal rolling factory, if a iron bar of square cross-section with [#permalink]
24 Jun 2022, 21:14
Moderators:
Bunuel
Math Expert
92901 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions