Find all School-related info fast with the new School-Specific MBA Forum

It is currently 18 Apr 2014, 06:05

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Data for a certain biology experiment are given in the table

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
Joined: 04 Aug 2011
Posts: 52
Followers: 0

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

Data for a certain biology experiment are given in the table [#permalink] New post 20 Aug 2011, 04:35
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

55% (02:45) correct 44% (01:22) wrong based on 9 sessions
AMOUT OF BACTERIA PRESENT

Time Amount
1:00 pm 10.0 grams
4.00 pm x grams
7.00 pm 14.4 grams

Data for a certain biology experiment are given in the table above. If the amount of bacteria present increased by the same fraction during each of the two 3-hour periods shown, how many grams of bacteria were present at 4:00 pm?

a) 12.0
b) 12.1
c) 12.2
d) 12.3
e) 12.4
[Reveal] Spoiler: OA
Manager
Manager
Status: Meh, I can't take the GMAT before 2017.
Joined: 20 Aug 2011
Posts: 152
Followers: 3

Kudos [?]: 62 [0], given: 0

Re: a GWD math (7) , which hasn't been discussed [#permalink] New post 20 Aug 2011, 08:05
Ratio problem

According to the given conditions

x/10=14.4/x
x^2=144
x=12
_________________

Hit kudos if my post helps you.
You may send me a PM if you have any doubts about my solution or GMAT problems in general.

Director
Director
Joined: 01 Feb 2011
Posts: 773
Followers: 12

Kudos [?]: 76 [0], given: 42

GMAT Tests User
Re: a GWD math (7) , which hasn't been discussed [#permalink] New post 20 Aug 2011, 10:11
let p be the fraction by which it increased

1pm 10 gms

4pm x gms = (1+p)10

7pm 14.4 gms = (1+p)x

=> x/10 = 14.4/x

=> x =12

Answer is A.
Manager
Manager
Joined: 18 Aug 2011
Posts: 60
Followers: 1

Kudos [?]: 7 [0], given: 6

Re: a GWD math (7) , which hasn't been discussed [#permalink] New post 21 Aug 2011, 01:30
Should the statement say something like "if the growth (or rate of growth) increases". Because if the amount increases by the same fraction, it would always double for example.
Re: a GWD math (7) , which hasn't been discussed   [#permalink] 21 Aug 2011, 01:30
    Similar topics Author Replies Last post
Similar
Topics:
New posts Q8. A 5x5 table is given. If each cell of the table is to be withme 4 16 Jan 2007, 08:38
New posts 1 Data for a certain experiment are given in the table. If the spiridon 6 23 Sep 2008, 20:00
Popular new posts 8 Data for a certain biology experiment are given in the table tejal777 10 29 Sep 2009, 19:29
New posts Harvey teaches a certain number of biology students in 2 bakfed 4 12 May 2010, 06:23
New posts 1 Experts publish their posts in the topic The results of a certain experiment included 6 data values udaymathapati 2 23 Jun 2010, 11:30
Display posts from previous: Sort by

Data for a certain biology experiment are given in the table

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.