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

 It is currently 24 Aug 2019, 13:27

### 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

# A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 57279
A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

11 May 2015, 07:27
00:00

Difficulty:

5% (low)

Question Stats:

90% (01:34) correct 10% (02:23) wrong based on 68 sessions

### HideShow timer Statistics

A certain bag contains 60 balls — 22 white, 18 green, 11 yellow, 5 red, and 4 purple. If a ball is to be chosen at random, what is the probability that the ball will be neither red nor purple?

A. 0.09
B. 0.15
C. 0.54
D. 0.85
E. 0.91

Kudos for a correct solution.

_________________
Intern
Joined: 20 Dec 2014
Posts: 13
GMAT Date: 03-08-2015
WE: Information Technology (Manufacturing)
Re: A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

11 May 2015, 07:45
1
Total number of favourable balls = Total - (no of red + no of purple) = 60-(5+4) = 51.
Therefore: P(neither red nor purple)= 51/60 = 0.85 D it is
Intern
Joined: 28 Aug 2013
Posts: 5
Location: India
GMAT 1: 680 Q48 V35
WE: Information Technology (Computer Software)
Re: A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

11 May 2015, 08:03
1
IMO D

Favorable/ Total ; 51/60 = 0.85
Intern
Joined: 29 Mar 2015
Posts: 44
Location: United States
Re: A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

11 May 2015, 21:30
1
There are 9 red or purple balls, so 51 non-red, non-purple balls. So the answer is 51/60 -> (divide each side by 3) 17/20 or 85/100 (multiply each side by 5), D
Senior Manager
Joined: 21 Jan 2015
Posts: 458
Location: India
Concentration: Strategy, Marketing
GMAT 1: 620 Q48 V28
GMAT 2: 690 Q49 V35
WE: Sales (Consumer Products)
A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

11 May 2015, 22:01
1
Bunuel wrote:
A certain bag contains 60 balls — 22 white, 18 green, 11 yellow, 5 red, and 4 purple. If a ball is to be chosen at random, what is the probability that the ball will be neither red nor purple?

A. 0.09
B. 0.15
C. 0.54
D. 0.85
E. 0.91

Kudos for a correct solution.

Ans: D

Solution: Find the probability of ball being either Red or Purple= (5/50)+(4/60)=9/60
probability of ball being neither Red nor Purple= 1-(9/60)= 51/60=0.85

_________________
--------------------------------------------------------------------
The Mind is Everything, What we Think we Become.
Math Expert
Joined: 02 Sep 2009
Posts: 57279
Re: A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

18 May 2015, 05:18
Bunuel wrote:
A certain bag contains 60 balls — 22 white, 18 green, 11 yellow, 5 red, and 4 purple. If a ball is to be chosen at random, what is the probability that the ball will be neither red nor purple?

A. 0.09
B. 0.15
C. 0.54
D. 0.85
E. 0.91

Kudos for a correct solution.

OFFICIAL SOLUTION:

According to the stem the ball can be white, green or yellow, so the probability is (white + green + yellow)/(total) = (22 + 18 + 11)/60 = 51/60 = 0.85.

_________________
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 7467
Location: United States (CA)
Re: A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,  [#permalink]

### Show Tags

04 Aug 2019, 11:40
1
Bunuel wrote:
A certain bag contains 60 balls — 22 white, 18 green, 11 yellow, 5 red, and 4 purple. If a ball is to be chosen at random, what is the probability that the ball will be neither red nor purple?

A. 0.09
B. 0.15
C. 0.54
D. 0.85
E. 0.91

Kudos for a correct solution.

Since 60 - 5 - 4 = 51 balls are neither red nor purple, the probability that the ball will be neither red nor purple is 51/60 = 17/20 = 85/100 = 0.85.

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
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.

Re: A certain bag contains 60 balls —22 white, 18 green, 11 yellow, 5 red,   [#permalink] 04 Aug 2019, 11:40
Display posts from previous: Sort by