Join us for MBA Spotlight – The Top 20 MBA Fair      Schedule of Events | Register

It is currently 04 Jun 2020, 20:19

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.

Close

Request Expert Reply

Confirm Cancel

In town X, w watts of power can provide equal amounts of electricity f

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Retired Moderator
User avatar
V
Joined: 27 Oct 2017
Posts: 1808
WE: General Management (Education)
GMAT ToolKit User CAT Tests
In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 14 Mar 2020, 18:29
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

50% (01:32) correct 50% (01:55) wrong based on 32 sessions

HideShow timer Statistics

GMATBusters’ Quant Quiz Question -7



In town X, w watts of power can provide equal amounts of electricity for h houses. If g new houses were built in town X, which of the following would represent the difference between the new number of watts of power used in town X and the original number of watts of power used in town X if power is supplied equally to all of the homes?
A) wg/h
B) w^2g/h
C) w/h
D) w(h+g)/h
E) w(h-g)/h

_________________
Retired Moderator
User avatar
V
Joined: 27 Oct 2017
Posts: 1808
WE: General Management (Education)
GMAT ToolKit User CAT Tests
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 14 Mar 2020, 18:30
w watts of power can provide equal amounts of electricity for h houses
power consumption per house = w/h

After g new houses were built in town X, total number of houses = g+h

Power consumption required = number of houses*power consumption per house = w/h *(g+h)

Difference = w/h *(g+h)- w = wg/h

Answer A
_________________
Director
Director
avatar
V
Joined: 22 Feb 2018
Posts: 753
GMAT ToolKit User
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 14 Mar 2020, 19:38
Watts of power =w, no.of houses=h, so original no. of watts of power/home = w/h
g new homes are added, h+g, so new no. of watts of power/home = w/h+g

w/h+g - w/h
w*h- w (h+g)/ h (h+g)
wh-wh-wg/h (h+g)
-wg/h (h+g)
Not close to any option but i'd guess A as an answer.
Senior Manager
Senior Manager
User avatar
P
Joined: 31 May 2017
Posts: 412
GMAT ToolKit User Reviews Badge
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 14 Mar 2020, 20:15
Lets substitute values for each

Let w = 1000
Let h = 100
let g = 25

Original number of power used = 1000 watts / 100 house = 10 watts/house needed

Number of new houses = 100 + 25 = 125 houses
New number of watts used to power town = 125 houses * 10 watts/house = 125*10 = 1250 watts

Difference = 1250 - 1000 = 250 Watts

Out of our options , A gives us the answer = 250

w*g/h = (1000*25)/100 = 250

Ans: A
_________________
Senior Manager
Senior Manager
avatar
G
Joined: 18 Jan 2020
Posts: 411
Location: India
GPA: 4
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 14 Mar 2020, 21:15
OA is supposedly C
If we take Watt power as 32 and H=4 per unit given to each house is 8
If we add 4 more house. So per unit supply will be 4 each (32/8)
So the difference between two = 32/4 = w/h

Posted from my mobile device
CEO
CEO
User avatar
V
Joined: 03 Jun 2019
Posts: 2935
Location: India
GMAT 1: 690 Q50 V34
WE: Engineering (Transportation)
Premium Member Reviews Badge CAT Tests
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 15 Mar 2020, 01:55
Given: In town X, w watts of power can provide equal amounts of electricity for h houses.

Asked: If g new houses were built in town X, which of the following would represent the difference between the new number of watts of power used in town X and the original number of watts of power used in town X if power is supplied equally to all of the homes?

w Power can be provided equally to h houses.
If g new houses were built in town X
w(h+g)/h Power can be provided equally to (h+g) houses
Difference = w(h+g)/h - w = wg/h

A) wg/h
B) w^2g/h
C) w/h
D) w(h+g)/h
E) w(h-g)/h

IMO A
_________________
Kinshook Chaturvedi
Email: kinshook.chaturvedi@gmail.com
Manager
Manager
avatar
S
Joined: 10 Jun 2018
Posts: 58
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 15 Mar 2020, 02:32
w watts of power for h houses.
So, 1 house requires \(\frac{w}{h}\) watts of power (equal power to all houses).

Now, g new houses built. So total houses are h+g.
Now if each house requires \(\frac{w}{h}\) watts power, h+g houses will require (h+g)*\(\frac{w}{h}\) watts power.

Difference in power
= \(\frac{w}{h}\)*(h+g) - w
= \(\frac{wg}{h}\)

Option: A
Manager
Manager
avatar
B
Joined: 11 Jun 2014
Posts: 65
CAT Tests
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 15 Mar 2020, 04:08
Answer: A
Each house has consumption=w/h
Including g houses ,total number of houses =g+h
New number of watt= (g+h)X w/h
Number of original watts used=w
Difference=(g+h)Xw/h-w=wg/h
Intern
Intern
avatar
B
Joined: 20 Mar 2019
Posts: 23
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 15 Mar 2020, 06:29
In town X, w watts of power can provide equal amounts of electricity for h houses. If g new houses were built in town X, which of the following would represent the difference between the new number of watts of power used in town X and the original number of watts of power used in town X if power is supplied equally to all of the homes?

w/h= electricity per home

adding g new houses we need to provide g times the energy consumed by 1 home

wg/h

Correct answer is A
VP
VP
User avatar
V
Joined: 18 Dec 2017
Posts: 1377
Location: United States (KS)
GMAT 1: 600 Q46 V27
Premium Member CAT Tests
Re: In town X, w watts of power can provide equal amounts of electricity f  [#permalink]

Show Tags

New post 15 Mar 2020, 07:11
1
Quote:
In town X, w watts of power can provide equal amounts of electricity for h houses. If g new houses were built in town X, which of the following would represent the difference between the new number of watts of power used in town X and the original number of watts of power used in town X if power is supplied equally to all of the homes?
A) wg/h
B) w^2g/h
C) w/h
D) w(h+g)/h
E) w(h-g)/h


I feel this was the trickiest of the lot.

Let's pick numbers .
w=1000
h=20

Each house uses = 1000/20 = 50

New houses g=30 (Assumption)

Each house still uses 50. New power in watts = 1000+1500=2500

Difference between 2500 and 1000 is 1500.

Keeping all this in mind,

A) wg/h = (1000*30)/20 = 500 Works
B) w^2g/h - Bigger value
C) w/h - 1000/20=50 - Nope
D) w(h+g)/h - NOpe
E) w(h-g)/h - Nope

Answer A
_________________
The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long

Why You Don’t Deserve A 700 On Your GMAT

Learn from the Legend himself: All GMAT Ninja LIVE YouTube videos by topic
You are missing on great learning if you don't know what this is: Project SC Butler
GMAT Club Bot
Re: In town X, w watts of power can provide equal amounts of electricity f   [#permalink] 15 Mar 2020, 07:11

In town X, w watts of power can provide equal amounts of electricity f

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne