GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 14 Nov 2018, 16:03

### 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 November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
• ### Free GMAT Strategy Webinar

November 17, 2018

November 17, 2018

07:00 AM PST

09:00 AM PST

Nov. 17, 7 AM PST. Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.

# Working at the same constant rate, p bricklayers can lay a

Author Message
TAGS:

### Hide Tags

Manager
Joined: 28 May 2009
Posts: 148
Location: United States
Concentration: Strategy, General Management
GMAT Date: 03-22-2013
GPA: 3.57
WE: Information Technology (Consulting)
Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

02 Mar 2013, 21:31
1
9
00:00

Difficulty:

35% (medium)

Question Stats:

75% (01:45) correct 25% (02:03) wrong based on 379 sessions

### HideShow timer Statistics

Working at the same constant rate, p bricklayers can lay a total of q bricks per hour. At this rate, how many bricks could 4 bricklayers lay in 8 hours?

(a) $$\frac{p}{2q}$$

(b) $$\frac{2p}{q}$$

(c) $$\frac{32p}{q}$$

(d) $$\frac{2q}{p}$$

(e) $$\frac{32q}{p}$$

Source: Gmat Hacks 1800

_________________
Senior Manager
Joined: 28 Apr 2012
Posts: 284
Location: India
Concentration: Finance, Technology
GMAT 1: 650 Q48 V31
GMAT 2: 770 Q50 V47
WE: Information Technology (Computer Software)
Re: Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

02 Mar 2013, 22:54
4
3
megafan wrote:
Working at the same constant rate, p bricklayers can lay a total of q bricks per hour. At this rate, how many bricks could 4 bricklayers lay in 8 hours?

(a) $$\frac{p}{2q}$$

(b) $$\frac{2p}{q}$$

(c) $$\frac{32p}{q}$$

(d) $$\frac{2q}{p}$$

(e) $$\frac{32q}{p}$$

Source: Gmat Hacks 1800

P bricklayers q bricks/hour
1 bricklayer $$\frac{q}{p}$$ bricks/hour
4 bricklayers $$\frac{4q}{p}$$ bricks/hour
4 bricklayers at a rate of $$\frac{4q}{p}$$brikcs/hour for 8 hours = 8* $$\frac{4q}{p}$$ = $$\frac{32q}{p}$$

Ans : E
_________________

"Appreciation is a wonderful thing. It makes what is excellent in others belong to us as well."
― Voltaire

Press Kudos, if I have helped.
Thanks!

##### General Discussion
Manager
Joined: 04 Oct 2011
Posts: 191
Location: India
GMAT 1: 440 Q33 V13
GPA: 3
Re: Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

02 Mar 2013, 23:56
1
megafan wrote:
Working at the same constant rate, p bricklayers can lay a total of q bricks per hour. At this rate, how many bricks could 4 bricklayers lay in 8 hours?

(a) $$\frac{p}{2q}$$

(b) $$\frac{2p}{q}$$

(c) $$\frac{32p}{q}$$

(d) $$\frac{2q}{p}$$

(e) $$\frac{32q}{p}$$

Source: Gmat Hacks 1800

p bricklayers can lay a total of q bricks per hour
So single person rate will be = $$q/p$$

how many bricks could One bricklayers lay in 8 hours:

R T W
$$q/p$$ 8 = $$8q/p$$

how many bricks could 4 bricklayers lay in 8 hours

$$8q/p$$ * 4 = $$32q/p$$
_________________

GMAT - Practice, Patience, Persistence
Kudos if u like

Manager
Joined: 25 Jun 2016
Posts: 61
GMAT 1: 780 Q51 V46
Re: Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

12 Jan 2017, 14:54
Value Substitution works pretty well here.

To make life easy, lets say p = 4 and q = 10.

Then the question becomes: Working at the same constant rate, 4 bricklayers can lay a total of 10 bricks per hour. At this rate, how many bricks could 4 bricklayers lay in 8 hours?

Well if those four can do 10 each hour, then after 8 hours they'll have done 80. So when p = 4 and q = 10, the answer is 80.

Plugging our numbers into the answer choices, we see that only E yields 80.
Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

16 Jan 2017, 17:15
megafan wrote:
Working at the same constant rate, p bricklayers can lay a total of q bricks per hour. At this rate, how many bricks could 4 bricklayers lay in 8 hours?

(a) $$\frac{p}{2q}$$

(b) $$\frac{2p}{q}$$

(c) $$\frac{32p}{q}$$

(d) $$\frac{2q}{p}$$

(e) $$\frac{32q}{p}$$

We are given that p bricklayers lay a total of q bricks per hour. Thus, the rate for p bricklayers is q. We next need to determine the rate of 4 bricklayers. To determine that rate, we can create a proportion, in which r is the rate for the 4 bricklayers:

p/q = 4/r

pr = 4q

r = 4q/p

Using the formula for work, which is work = rate x time, we see that 4 bricklayers can lay (4q/p) x 8 = 32q/p bricks in 8 hours.

_________________

Jeffery Miller

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Manager
Joined: 20 Jan 2017
Posts: 60
Location: United States (NY)
Schools: CBS '20 (A)
GMAT 1: 750 Q48 V44
GMAT 2: 610 Q34 V41
GPA: 3.92
Re: Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

02 Feb 2017, 04:00
1) $$pr=\frac{q}{1}; r=\frac{q}{1}*\frac{1}{p}=\frac{q}{p}$$
2) $$4r=\frac{x}{8}; \frac{4q}{p}=\frac{x}{8}; xp=32q; x=\frac{32q}{p}$$
Non-Human User
Joined: 09 Sep 2013
Posts: 8775
Re: Working at the same constant rate, p bricklayers can lay a  [#permalink]

### Show Tags

27 Jul 2018, 10:21
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: Working at the same constant rate, p bricklayers can lay a &nbs [#permalink] 27 Jul 2018, 10:21
Display posts from previous: Sort by