A physics class has majors and non-majors in a ratio of 4 to

Oldest

Best Reply

Author

Message

TAGS:

Intern

Joined: 19 Jan 2010

Posts: 13

Followers: 0

Kudos [?]: 2 [0], given: 16

A physics class has majors and non-majors in a ratio of 4 to [#permalink]

02 Jun 2012, 18:01

00:00

Question Stats:

91% (01:53) correct

8% (01:27) wrong

based on 1 sessions

Any help please. the book did not provide any answer. Thanks

A physics class has majors and non-majors in a ratio of 4 to 10. If two more majors were to be added to the class, the ratio would then be 2 to 4. How many people are in the class?

A. 14
B. 28
C. 42
D. 56
E. 70

GMAT Club team member

Joined: 02 Sep 2009

Posts: 11591

Followers: 1799

Kudos [?]: 9582 [0], given: 826

Re: A physics class has majors and non-majors in a ratio of 4 to [#permalink]

03 Jun 2012, 02:55

phoenix9801 wrote:

Given: \frac{majors}{non-majors}=\frac{4x}{10x}, for some positive multiple x.

Also: \frac{4x+2}{10x}=\frac{2}{4} --> x=2 --> total=majors+non-majors=4x+10x=14x=28.

Answer: B.

Answer: C.
_________________

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. NEW!!!

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set. NEW!!!

What are GMAT Club Tests?
25 extra-hard Quant Tests

Find out what's new at GMAT Club - latest features and updates

Re: A physics class has majors and non-majors in a ratio of 4 to [#permalink] 03 Jun 2012, 02:55

		Similar topics	Author	Replies	Last post
Similar Topics:		In a class there are 100 students.62 passed in physics, 70	manirajan	5	10 Sep 2006, 23:44
		I was a physics major in College, and only recently took a	Tuneman	5	12 Feb 2007, 14:22
		The ratio of boys to girls in Class A is 3 to 4. The ratio	ArvGMAT	3	16 Jun 2007, 22:04
		The ratio of boys to girls in Class A is 3 to 4. The ratio	alimad	8	10 Nov 2007, 06:25
	8	The ratio of boys to girls in Class A is 3 to 4. The ratio	changhiskhan	17	03 Apr 2010, 12:57

A physics class has majors and non-majors in a ratio of 4 to

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

A physics class has majors and non-majors in a ratio of 4 to

A physics class has majors and non-majors in a ratio of 4 to

Main navigation

GMAT Resources

Partners

MBA Resources