GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

It is currently 27 May 2020, 02:02

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

A laptop computer uses s fewer watts of electricity than a desktop com

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 64152
A laptop computer uses s fewer watts of electricity than a desktop com  [#permalink]

Show Tags

New post 19 Mar 2020, 03:59
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

69% (01:19) correct 31% (01:33) wrong based on 26 sessions

HideShow timer Statistics

A laptop computer uses s fewer watts of electricity than a desktop computer does. In combination, the 2 computers use t watts of electricity. Which of the following expressions represents the desktop computer’s electricity usage, in watts?

A. t/2 - s
B. (t + s)/2
C. t(s − 1)
D. t - s/2
E. t − 2s

_________________
GMAT Club Legend
GMAT Club Legend
User avatar
V
Joined: 18 Aug 2017
Posts: 6270
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Reviews Badge CAT Tests
Re: A laptop computer uses s fewer watts of electricity than a desktop com  [#permalink]

Show Tags

New post 19 Mar 2020, 09:45
Bunuel wrote:
A laptop computer uses s fewer watts of electricity than a desktop computer does. In combination, the 2 computers use t watts of electricity. Which of the following expressions represents the desktop computer’s electricity usage, in watts?

A. t/2 - s
B. (t + s)/2
C. t(s − 1)
D. t - s/2
E. t − 2s


electricity of laptop = desktop-s
and L+d= t
d-s+d=t
2d=t+s
d=(t+s)/2
IMO B
Intern
Intern
avatar
B
Joined: 08 Mar 2020
Posts: 18
WE: Corporate Finance (Non-Profit and Government)
Re: A laptop computer uses s fewer watts of electricity than a desktop com  [#permalink]

Show Tags

New post 19 Mar 2020, 10:00
If desktop uses x

Then Laptop uses S less than Desktop ==> x-s

Both together use t

X+X-s=t
X=(t+s) /2

Posted from my mobile device
Target Test Prep Representative
User avatar
V
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 10566
Location: United States (CA)
Re: A laptop computer uses s fewer watts of electricity than a desktop com  [#permalink]

Show Tags

New post 21 Mar 2020, 14:52
Bunuel wrote:
A laptop computer uses s fewer watts of electricity than a desktop computer does. In combination, the 2 computers use t watts of electricity. Which of the following expressions represents the desktop computer’s electricity usage, in watts?

A. t/2 - s
B. (t + s)/2
C. t(s − 1)
D. t - s/2
E. t − 2s


We can create the equations:

L = D - s

L + D = t

Substituting, we have:

D - s + D = t

2D = t + s

D = (t + s)/2

Answer: B
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
202 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

GMAT Club Bot
Re: A laptop computer uses s fewer watts of electricity than a desktop com   [#permalink] 21 Mar 2020, 14:52

A laptop computer uses s fewer watts of electricity than a desktop com

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





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