Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
May 1912:00 PM PDT
-01:00 PM PDT
Scoring 329 on the GRE is not always about using more books, more courses, or a longer study plan. In this episode of GRE Success Talks, Ashutosh shares his GRE preparation strategy, study plan, and test-day experience, explaining how he kept his prep....
May 2008:00 AM PDT
-08:30 AM PDT
What’s in it for you- Live Profile Evaluation Chat Session with Jenifer Turtschanow, CEO, ARINGO. Come with your details prepared and ARINGO will share insights! Pre-MBA Role/Industry, YOE, Exam Score, C/GPA, ECs Post-MBA Role/ Industry & School List.
May 1501:00 PM IST
-11:00 AM IST
Start your journey with a fully customized action plan and work with a dedicated mentor to achieve a 735+ score.- Jun 10
06:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
13 Dec 2021, 03:15
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
68% (02:26) correct
32%
(02:35)
wrong
based on 299
sessions
History
Date
Time
Result
Not Attempted Yet
A and B are two alloys of copper and tin prepared by mixing the respective metals in ratio of 5:3 and 5:11 respectively. If the alloy A and B are mixed to form a third alloy C with an equal proportions of copper and tin what is the ration of alloys A and B In the new alloy C?
A 3:5
B 4:5
C 3:2
D 2:3
E 15:17
A 3:5
B 4:5
C 3:2
D 2:3
E 15:17
21 Dec 2021, 10:54
Kudos
Bookmarks
Given:
A B C= A+B
Copper 5a 5b 5a + 5b
Tin 3a 11b 3a + 11b
Total 8a 16b
In C, the ratio of Copper and Tin is Equal.
So 5a + 5b = 3a +11b --> 2a = 6b --> a/b =3/1 .........(1)
Now we are asked what is the ratio of alloys A and B in new alloy C.
So we need Alloy A/ Alloy B --> (8a)/(16b) i.e. we need to find a/2b and using (1) we get
a/2b = 1/2 * a/b = 1/2 * 3/1 = 3/2.
A B C= A+B
Copper 5a 5b 5a + 5b
Tin 3a 11b 3a + 11b
Total 8a 16b
In C, the ratio of Copper and Tin is Equal.
So 5a + 5b = 3a +11b --> 2a = 6b --> a/b =3/1 .........(1)
Now we are asked what is the ratio of alloys A and B in new alloy C.
So we need Alloy A/ Alloy B --> (8a)/(16b) i.e. we need to find a/2b and using (1) we get
a/2b = 1/2 * a/b = 1/2 * 3/1 = 3/2.
Attachments
Screenshot 2021-12-28 at 10.03.40 PM.png [ 11.19 KiB | Viewed 5040 times ]
General Discussion
13 Oct 2022, 20:47
Kudos
Bookmarks
A and B are two alloys of copper and tin prepared by mixing the respective metals in ratio of 5:3 and 5:11 respectively. If the alloy A and B are mixed to form a third alloy C with an equal proportions of copper and tin what is the ration of alloys A and B In the new alloy C?
A 3:5
B 4:5
C 3:2
D 2:3
E 15:17
Alloy A ratio = 5:3 Copper = 5/8 = 10/16
Alloy B ratio = 5:11 Copper = 5/16 = 5/16
Final Alloy C = 1:1 Copper = 1/2 = 8/16
Make denominator common
Copper average in alloy c = 8
Using alligation
POV of copper
A = 10 B = 5
C = 8
(Average)
8 - 5 10 - 8
= 3 : 2
C
A 3:5
B 4:5
C 3:2
D 2:3
E 15:17
Alloy A ratio = 5:3 Copper = 5/8 = 10/16
Alloy B ratio = 5:11 Copper = 5/16 = 5/16
Final Alloy C = 1:1 Copper = 1/2 = 8/16
Make denominator common
Copper average in alloy c = 8
Using alligation
POV of copper
A = 10 B = 5
C = 8
(Average)
8 - 5 10 - 8
= 3 : 2
C
