December 14, 2018 December 14, 2018 09:00 AM PST 10:00 AM PST 10 Questions will be posted on the forum and we will post a reply in this Topic with a link to each question. There are prizes for the winners. December 13, 2018 December 13, 2018 08:00 AM PST 09:00 AM PST What people who reach the high 700's do differently? We're going to share insights, tips and strategies from data we collected on over 50,000 students who used examPAL.
Author 
Message 
TAGS:

Hide Tags

VP
Status: It's near  I can see.
Joined: 13 Apr 2013
Posts: 1354
Location: India
Concentration: International Business, Operations
GPA: 3.01
WE: Engineering (Consulting)

Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 choc
[#permalink]
Show Tags
24 Sep 2018, 10:29
Question Stats:
86% (00:47) correct 14% (01:16) wrong based on 56 sessions
HideShow timer Statistics
Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 chocolate candies, and 20 banana chips. She picks one item from the bag at random. What is the probability that she picks either a chocolate candy or a banana chip? a. 1/50 b. 1/10 c. 1/5 d. 3/10 e. 7/10
Official Answer and Stats are available only to registered users. Register/ Login.
_________________
"Do not watch clock; Do what it does. KEEP GOING."



Math Expert
Joined: 02 Aug 2009
Posts: 7106

Re: Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 choc
[#permalink]
Show Tags
24 Sep 2018, 21:44
AkshdeepS wrote: Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 chocolate candies, and 20 banana chips. She picks one item from the bag at random. What is the probability that she picks either a chocolate candy or a banana chip?
a. 1/50
b. 1/10
c. 1/5
d. 3/10
e. 7/10 pretty straightforward.. total ways ONE item can picked up = ( 30+40+10+20)=100 ways a chocolate candy and banana chips can be picked.. chocolate candy  10 and banana chips  20, so total  30 probability  \(\frac{30}{100} = \frac{3}{10}\) D
_________________
1) Absolute modulus : http://gmatclub.com/forum/absolutemodulusabetterunderstanding210849.html#p1622372 2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html 3) effects of arithmetic operations : https://gmatclub.com/forum/effectsofarithmeticoperationsonfractions269413.html
GMAT online Tutor



Manager
Joined: 24 Dec 2017
Posts: 175
Location: India
Concentration: Strategy, Real Estate

Re: Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 choc
[#permalink]
Show Tags
25 Sep 2018, 01:06
Probability of picking Choc. candies = 10/100 = 1/10 Probability of picking Bana. Chips = 20/100 = 1/5
Probability that she picks either a chocolate candy or a banana chip = 1/10 +1/5 = 3/10
Hence D



Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 4294
Location: United States (CA)

Re: Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 choc
[#permalink]
Show Tags
27 Sep 2018, 16:23
AkshdeepS wrote: Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 chocolate candies, and 20 banana chips. She picks one item from the bag at random. What is the probability that she picks either a chocolate candy or a banana chip?
a. 1/50
b. 1/10
c. 1/5
d. 3/10
e. 7/10 There are 100 items in the bag, including 10 chocolate candies and 20 banana chips. We add the probabilities of the individual items to obtain the probability of picking either a chocolate candy (C) or a banana chip (B). P(C or B) = 10/100 + 20/100 = 30/100 = 3/10 Answer: D
_________________
Scott WoodburyStewart
Founder and CEO
GMAT Quant SelfStudy Course
500+ lessons 3000+ practice problems 800+ HD solutions




Re: Mary made a trial mix that consists of 30 peanuts, 40 raisins, 10 choc &nbs
[#permalink]
27 Sep 2018, 16:23






