NEW HERE? LEARN MORE
closeclose
Last visit was: 24 Apr 2024, 01:14 It is currently 24 Apr 2024, 01:14
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

Hot tea at a temperature of 60 and cold water

User avatar
B
kevincan
GMAT Instructor
Joined: 04 Jul 2006
Posts: 960
Own Kudos [?]: 693 [0]
Given Kudos: 6
Location: Madrid
 Q51  V50
Send PM
Hot tea at a temperature of 60 and cold water [#permalink] New post   Updated on: 15 Jul 2006, 06:34
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Hide Show timer Statistics
Hot tea at a temperature of 60˚ and cold water at a temperature of 10˚ are added to 50 mL of lemon juice at room temperature (25˚). The resulting mixture has a temperature of 40˚. How much hot tea was added?

(1) The tea and water were added in a 2:1 ratio.
(2) The mixture has a volume of 275 mL



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!

Originally posted by kevincan on 15 Jul 2006, 01:27.
Last edited by kevincan on 15 Jul 2006, 06:34, edited 1 time in total.
User avatar
BG
Senior Manager
Senior Manager
Joined: 13 Nov 2003
Posts: 357
Own Kudos [?]: 176 [0]
Given Kudos: 0
Location: BULGARIA
Concentration: INSURANCE, RISK MANAGEMENT
 Q49  V38
Send PM
Re: Hot tea at a temperature of 60 and cold water [#permalink] New post   15 Jul 2006, 02:17
A) the mixture will have 650/15=43,3 degrees temperature.
The equation is (X*43,3)/(X+50)+50*25/(X+50)=40 and we can find how many ml of the tea is added
B) We can find the temperature of the added mixture and from there the amount of tea
IMO D
User avatar
ps_dahiya
VP
VP
Joined: 20 Nov 2005
Posts: 1490
Own Kudos [?]: 1133 [0]
Given Kudos: 0
Concentration: Strategy, Entrepreneurship
Schools:Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
 Q50  V34
Send PM
Re: Hot tea at a temperature of 60 and cold water [#permalink] New post   15 Jul 2006, 02:31
D

Stem: 60T+10W+50*25 = (T+W+50)*40

St1: T = 2W. We can solve two equations for T and W. We get T = 50ml and W = 25ml: SUFF

St2: T + W + 50 = 300 i.e T+W = 250. We can solve two equations for T and W. We get T = 199 and W = 51: SUFF

But generally we don't get different answers in GMAT. Is my solution correct or not???
User avatar
B
kevincan
GMAT Instructor
Joined: 04 Jul 2006
Posts: 960
Own Kudos [?]: 693 [0]
Given Kudos: 6
Location: Madrid
 Q51  V50
Send PM
Re: Hot tea at a temperature of 60 and cold water [#permalink] New post   15 Jul 2006, 06:36
ps_dahiya wrote:
D

Stem: 60T+10W+50*25 = (T+W+50)*40

St1: T = 2W. We can solve two equations for T and W. We get T = 50ml and W = 25ml: SUFF

St2: T + W + 50 = 300 i.e T+W = 250. We can solve two equations for T and W. We get T = 199 and W = 51: SUFF

But generally we don't get different answers in GMAT. Is my solution correct or not???


We both made a mistake; in (1), T=150 and W= 75, total volume is 275mL, not 300 as I orginally stated. Q has been corrected, thanks!

OA: D



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
GMAT Club Bot
gmatclubot
Re: Hot tea at a temperature of 60 and cold water [#permalink]
15 Jul 2006, 06:36
Moderators:
Bunuel
Math Expert
92889 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts
GMATBusters
GMAT Tutor
1907 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