Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 27 May 2017, 07:01

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# In a certain group of people, the average weight of the

Author Message
TAGS:

### Hide Tags

Intern
Joined: 09 Feb 2011
Posts: 16
Followers: 1

Kudos [?]: 55 [0], given: 0

In a certain group of people, the average weight of the [#permalink]

### Show Tags

09 Feb 2011, 16:41
00:00

Difficulty:

(N/A)

Question Stats:

89% (01:06) correct 11% (00:28) wrong based on 9 sessions

### HideShow timer Statistics

79. In a certain group of people, the average weight of the males is 170 pounds and of the females, 120 pounds. What is the average weight of the people in the group?
(1) The group contains twice as many females as males.
(2) The group contains 15 more females than males.
[Reveal] Spoiler: OA
Manager
Status: Quant 50+?
Joined: 02 Feb 2011
Posts: 107
Concentration: Strategy, Finance
Schools: Tuck '16, Darden '16
Followers: 1

Kudos [?]: 28 [0], given: 22

Re: In a certain group of people, the average weight of the male [#permalink]

### Show Tags

09 Feb 2011, 17:19
loveparis wrote:
79. In a certain group of people, the average weight of the males is 170 pounds and of the females, 120 pounds. What is the average weight of the people in the group?
(1) The group contains twice as many females as males.
(2) The group contains 15 more females than males.

Are you even looking at the answers ppl post to your questions? these are very straightforward.

Without doing any work A is obvious.

(1) if the group contains 2/3 females than 2/3*120 + 1/3* 170 = average. suf
(2) No data of number of males... if 1 male 16 females, average is way dif than 100 males 115 females. not suf
SVP
Joined: 16 Nov 2010
Posts: 1666
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 34

Kudos [?]: 533 [0], given: 36

Re: In a certain group of people, the average weight of the male [#permalink]

### Show Tags

10 Feb 2011, 06:12
170M + M/2120
-------------------- is given by 1, so sufficient as M cancels out.
M + M/2

170M + (M + 15)120
-------------------------- is given by 2, and M will not cancel out so it's insufficient.
M + M + 15

_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

GMAT Club Premium Membership - big benefits and savings

Re: In a certain group of people, the average weight of the male   [#permalink] 10 Feb 2011, 06:12
Similar topics Replies Last post
Similar
Topics:
6 How many people are in a certain elevator?(1) The average (arithmetic 4 09 Jan 2015, 20:40
The average weight of the students 3 10 Aug 2013, 06:09
2 The average weight of the women in a room is 120 lbs, 3 30 Nov 2011, 23:28
13 The average weight of the women in a room is 120 lbs, and 8 14 May 2016, 09:36
The average weight of the women in a room is 120 lbs, and 3 05 May 2010, 04:59
Display posts from previous: Sort by