-
FREE GMAT ExamKnow how you'd score today for $0
Available with Beat the GMAT members only code
MORE DETAILS
-
Free Trial & Practice ExamBEAT THE GMAT EXCLUSIVE
Available with Beat the GMAT members only code
MORE DETAILS
-
Free Practice Test & ReviewHow would you score if you took the GMAT
Available with Beat the GMAT members only code
MORE DETAILS
-
Free Veritas GMAT ClassExperience Lesson 1 Live Free
Available with Beat the GMAT members only code
MORE DETAILS
-
Award-winning private GMAT tutoringRegister now and save up to $200
Available with Beat the GMAT members only code
MORE DETAILS
-
Get 300+ Practice Questions25 Video lessons and 6 Webinars for FREE
Available with Beat the GMAT members only code
MORE DETAILS
-
-
5 Day FREE TrialStudy Smarter, Not Harder
Available with Beat the GMAT members only code
MORE DETAILS
-
-
5-Day Free Trial5-day free, full-access trial TTP Quant
Available with Beat the GMAT members only code
MORE DETAILS
Fractions, ratio and decimals
This topic has
2 expert replies and 0 member replies
Top Member
Fractions, ratio and decimals
Mon Sep 18, 2017 1:36 pm
- +1 Upvote Post
- Quote
- Flag
GMAT/MBA Expert
Brent@GMATPrepNow
GMAT Instructor
- Joined
- 08 Dec 2008
- Posted:
- 11521 messages
- Followed by:
- 1229 members
- Upvotes:
- 5254
- GMAT Score:
- 770
Mon Sep 18, 2017 1:41 pm
Roland2rule wrote:
Target question: What is the ratio of the number of boys to the number of girls?
In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?
(1) There are 3 times as many girls as boys in Mr. Smith's class.
(2) The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.
(1) There are 3 times as many girls as boys in Mr. Smith's class.
(2) The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.
Statement 1: There are 3 times as many girls as boys in Mr. Smith's class.
This means there are 3 girls for every 1 boy
So, the ratio of the number of boys to the number of girls = 3 : 1
Since we can answer the target question with certainty, statement 1 is SUFFICIENT
Statement 2: The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.
So, for every 4 children there are 3 girls and 1 boy
So, the ratio of the number of boys to the number of girls = 3 : 1
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer: D
Cheers,
Brent
_________________
Brent Hanneson – Founder of GMATPrepNow.com
Use our video course along with Beat The GMAT's free 60-Day Study Guide
Check out the online reviews of our course
Come see all of our free resources
- +1 Upvote Post
- Quote
- Flag
GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months!
GMAT/MBA Expert
Brent@GMATPrepNow
GMAT Instructor
- Joined
- 08 Dec 2008
- Posted:
- 11521 messages
- Followed by:
- 1229 members
- Upvotes:
- 5254
- GMAT Score:
- 770
Mon Sep 18, 2017 1:42 pm
Roland2rule wrote:
Hey Roland2rule,
In Mr. Smith's class, what is the ratio of the number of boys to the number of girls?
(1) There are 3 times as many girls as boys in Mr. Smith's class.
(2) The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.
a. None of the statement is sufficient
b. only statement 1 is sufficient
c. statement 1 and 2 are sufficient
d. statement 2 is not sufficient
e. statement 2 is sufficient and statement 1 is insufficient
QA is c.
why is statement 2 wrong?
(1) There are 3 times as many girls as boys in Mr. Smith's class.
(2) The number of boys is 1/4 of the total number of boys and girls in Mr. Smith's class.
a. None of the statement is sufficient
b. only statement 1 is sufficient
c. statement 1 and 2 are sufficient
d. statement 2 is not sufficient
e. statement 2 is sufficient and statement 1 is insufficient
QA is c.
why is statement 2 wrong?
You have posted incorrect answers to several questions.
Please look at the answer key before posting more incorrect answers.
Cheers,
Brent
_________________
Brent Hanneson – Founder of GMATPrepNow.com
Use our video course along with Beat The GMAT's free 60-Day Study Guide
Check out the online reviews of our course
Come see all of our free resources
- +1 Upvote Post
- Quote
- Flag
GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months!
Top First Responders* |
|||
|---|---|---|---|
| 1 |  |
GMATGuruNY | 70 first replies |
| 2 |  |
Rich.C@EMPOWERgma... | 42 first replies |
| 3 |  |
Brent@GMATPrepNow | 40 first replies |
| 4 |  |
Jay@ManhattanReview | 24 first replies |
| 5 |  |
Terry@ThePrinceto... | 10 first replies |
| * Only counts replies to topics started in last 30 days | |||
| See More Top Beat The GMAT Members | |||
Most Active Experts |
|||
|---|---|---|---|
| 1 | |
GMATGuruNY
The Princeton Review Teacher |
133 posts |
| 2 |  |
Scott@TargetTestPrep
Target Test Prep |
113 posts |
| 3 | |
Rich.C@EMPOWERgma...
EMPOWERgmat |
111 posts |
| 4 |  |
Jeff@TargetTestPrep
Target Test Prep |
111 posts |
| 5 | |
Brent@GMATPrepNow
GMAT Prep Now Teacher |
90 posts |
| See More Top Beat The GMAT Experts | |||
