GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 22 Oct 2019, 04:25

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 an acoustics class, 120 students are male and 100 students are fem

  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: 58428
In an acoustics class, 120 students are male and 100 students are fem  [#permalink]

Show Tags

New post 10 Apr 2019, 23:30
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

68% (01:41) correct 32% (01:52) wrong based on 28 sessions

HideShow timer Statistics

In an acoustics class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?

(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%

_________________
Manager
Manager
avatar
B
Joined: 01 May 2017
Posts: 82
Location: India
Re: In an acoustics class, 120 students are male and 100 students are fem  [#permalink]

Show Tags

New post 11 Apr 2019, 00:47
In an acoustics class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?

(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%

engineering Male students = 0.25*120 = 30
engineering female students = 0.2*100 = 20

engineering Male students passed = 0.2*30 = 6
engineering Male students passed = 0.25*20 = 5

Total engineering students passed = 11/220 = 5%

Option A is correct
GMAT Club Legend
GMAT Club Legend
User avatar
D
Joined: 18 Aug 2017
Posts: 5031
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member
Re: In an acoustics class, 120 students are male and 100 students are fem  [#permalink]

Show Tags

New post 11 Apr 2019, 01:36
Bunuel wrote:
In an acoustics class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?

(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%


Male = 120 ; engr ; 30
Female= 100 ; engr; 20
--------- Engr------Pass-----fail----
male----- 30-------6-------24
female----20------5--------15
total------50------11-------39
total pass % of engr. 11/50 * 100 = 22%
IMO D
GMAT Club Legend
GMAT Club Legend
User avatar
D
Joined: 18 Aug 2017
Posts: 5031
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member
Re: In an acoustics class, 120 students are male and 100 students are fem  [#permalink]

Show Tags

New post 11 Apr 2019, 01:36
Dare Devil
question has asked What percentage of engineering students passed the exam
you have calculated total % of class...


Dare Devil wrote:
In an acoustics class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?

(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%

engineering Male students = 0.25*120 = 30
engineering female students = 0.2*100 = 20

engineering Male students passed = 0.2*30 = 6
engineering Male students passed = 0.25*20 = 5

Total engineering students passed = 11/220 = 5%

Option A is correct
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8125
Location: United States (CA)
Re: In an acoustics class, 120 students are male and 100 students are fem  [#permalink]

Show Tags

New post 13 Apr 2019, 19:04
Bunuel wrote:
In an acoustics class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam?

(A) 5%
(B) 10%
(C) 16%
(D) 22%
(E) 25%


0.25 x 120 = 30 male engineering students.

0.2 x 100 = 20 female engineering students.

0.2 x 30 = 6 male students passed, and 0.25 x 20 = 5 female students passed.

The percentage of engineering students who passed the exam was 11/50 = 22/100 = 22%.

Answer: D
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 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: In an acoustics class, 120 students are male and 100 students are fem   [#permalink] 13 Apr 2019, 19:04
Display posts from previous: Sort by

In an acoustics class, 120 students are male and 100 students are fem

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





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