GRE Prep 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.
Apr 25Crafting an Impactful Resume: Balancing Detail with Brevity
10:00 AM EDT
-10:30 AM EDT
Showcase your achievements through impactful storytelling! Get ready for an LIVE session on April 25, Learn how to craft compelling narratives on your resume that resonate with admission committees.
Apr 26Get a Top GRE Score with Target Test Prep
12:00 PM EDT
-01:00 PM EDT
The Target Test Prep course represents a quantum leap forward in GRE preparation, a radical reinterpretation of the way that students should study. In fact, more and more Target Test Prep students are scoring 329 and above on the GRE.
A team of 6 workers is building a levee. If each man works at the same
[#permalink]
03 May 2021, 10:41
03 May 2021, 10:41
1
Expert Reply
1
Bookmarks
00:00
Question Stats:
95% (01:01) correct
4% (01:16) wrong based on 21 sessions
Hide Show timer Statistics
A team of 6 workers is building a levee. If each man works at the same rate and it takes 1 man 18 hours to build a levee, how long would it take the team to build a levee?
A. 3
B. 6
C. 9
D. 27
E. 54
A. 3
B. 6
C. 9
D. 27
E. 54
Re: A team of 6 workers is building a levee. If each man works at the same
[#permalink]
03 May 2021, 11:21
03 May 2021, 11:21
1
1
Bookmarks
If 1 worker works at x rate to build 1 unit then rate x, time 18, work 1:
18x = 1
x=1/18
If 6 workers work at the same rate to build 1 levee then rate 6*1/18, time y, work 1:
6*(1/18)(t)=1
t = 3
Alternatively, I just thought if there are 6 people doing work at the same rate for the same 1 unit of work, then the time is divided by 6 and 18/6 = 3.
18x = 1
x=1/18
If 6 workers work at the same rate to build 1 levee then rate 6*1/18, time y, work 1:
6*(1/18)(t)=1
t = 3
Alternatively, I just thought if there are 6 people doing work at the same rate for the same 1 unit of work, then the time is divided by 6 and 18/6 = 3.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: A team of 6 workers is building a levee. If each man works at the same
[#permalink]
03 May 2021, 12:43
03 May 2021, 12:43
1
1
Bookmarks
Carcass wrote:
A team of 6 workers is building a levee. If each man works at the same rate and it takes 1 man 18 hours to build a levee, how long would it take the team to build a levee?
A. 3
B. 6
C. 9
D. 27
E. 54
A. 3
B. 6
C. 9
D. 27
E. 54
APPROACH #1:
In general, if it takes 1 man k hours to complete a job, then:
- it will take 2 men HALF the time (i.e., k/2 hours) to complete the job
- it will take 3 men ONE-THIRD the time (i.e., k/3 hours) to complete the job
- it will take 4 men ONE-FOURTH the time (i.e., k/4 hours) to complete the job
- it will take 5 men ONE-FIFTH the time (i.e., k/5 hours) to complete the job
- it will take 6 men ONE-SIXTH the time (i.e., k/6 hours) to complete the job
We're told that it takes 1 man 18 hours to complete the job.
So, it will take 6 men 18/6 hours to complete the job
18/6 = 3 hours
Answer: A
APPROACH #2:
Another approach is to assign a NICE VALUE to the job.
Given: 1 man 18 hours to build a levee
So, let's say that building a levee requires the placement of 18 bricks (this number works well with the given information).
This means ONE MAN can place 1 brick per hour
So, SIX MEN can place a total of 6 bricks per hour
The ENTIRE JOB requires placement of 18 bricks
Time = output/rate = 18/6 = 3 hours
Answer: A
