Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2512:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
22 Aug 2024, 01:31
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
66% (01:39) correct
34%
(01:53)
wrong
based on 70
sessions
History
Date
Time
Result
Not Attempted Yet
What percentage of the dinosaurs in a certain museum exhibit were both bipeds and carnivores?
(1) 60% of the bipeds in the exhibit were not carnivores, and 60% of the carnivores in the exhibit were bipeds.
(2) Every dinosaur in the exhibit was a biped, a carnivore, or both.
(1) 60% of the bipeds in the exhibit were not carnivores, and 60% of the carnivores in the exhibit were bipeds.
(2) Every dinosaur in the exhibit was a biped, a carnivore, or both.
22 Aug 2024, 02:48
Kudos
Bookmarks
(1) 60% of the bipeds in the exhibit were not carnivores, and 60% of the carnivores in the exhibit were bipeds.
Using a 3x3 matrix to plot the provided info and solve any of the other spaces:
\begin{tabular}{|l|l|l|l|}
\hline
~ & B & nB & Total \\ \hline
C & \(\frac{4}{10}\)b /\(\frac{6}{10}\)c & \(\frac{4}{10}\)c & c \\ \hline
nC & \(\frac{6}{10}\)b & ~ & ~ \\ \hline
Total & b & ~ & 100 \\ \hline
\end{tabular}
Without knowing the number of non-carnivores non-bipedal dinosaurs in the exhibit one will not be able to solve for the percentage of the dinosaurs in a certain museum exhibit were both bipeds and carnivores.
INSUFFICIENT
(2) Every dinosaur in the exhibit was a biped, a carnivore, or both.
No numeric values are given by this statement, which in itself means the statement alone will be insufficient. However, the most important piece of info which one can extract from this statement is that there are no dinosaurs in the exhibit which are non-carnivores and non-bipedal.
INSUFFICIENT
(1+2)
Putting the two statements together, one now can complete the 3x3 matrix to look like:
\begin{tabular}{|l|l|l|l|}
\hline
~ & B & nB & Total \\ \hline
C & \(\frac{4}{10}\)b /\(\frac{6}{10}\)c & \(\frac{4}{10}\)c & c \\ \hline
nC & \(\frac{6}{10}\)b & 0 & \(\frac{6}{10}\)b \\ \hline
Total & b & \(\frac{4}{10}\)c & 100 \\ \hline
\end{tabular}
One has \(b + \frac{4}{10} = 100 \) and \(c + \frac{6}{10}b = 100\).
Making them equal one another: \(b + \frac{4}{10} = c + \frac{6}{10}b\)
\(\frac{4}{10}b = \frac{6}{10}c\)
\(4b = 6c\)
\(\frac{b}{c} = \frac{6}{4}\)
Which means of the total dinosaurs in the exhibit \(\frac{4}{10}\) or \(40\)% are bipedal and \(\frac{6}{10}\) or \(60%\) are carinovers.
The number of dinosaurs in the exhibit which are both carnivores and bipedal is \(\frac{4}{10}b\), which is \(60\)% of the total dinosaurs. Therefore, the percentage of the dinosaurs in a certain museum exhibit were both bipeds and carnivores: \(24\)%
SUFFICIENT
ANSWER C
Using a 3x3 matrix to plot the provided info and solve any of the other spaces:
\begin{tabular}{|l|l|l|l|}
\hline
~ & B & nB & Total \\ \hline
C & \(\frac{4}{10}\)b /\(\frac{6}{10}\)c & \(\frac{4}{10}\)c & c \\ \hline
nC & \(\frac{6}{10}\)b & ~ & ~ \\ \hline
Total & b & ~ & 100 \\ \hline
\end{tabular}
Without knowing the number of non-carnivores non-bipedal dinosaurs in the exhibit one will not be able to solve for the percentage of the dinosaurs in a certain museum exhibit were both bipeds and carnivores.
INSUFFICIENT
(2) Every dinosaur in the exhibit was a biped, a carnivore, or both.
No numeric values are given by this statement, which in itself means the statement alone will be insufficient. However, the most important piece of info which one can extract from this statement is that there are no dinosaurs in the exhibit which are non-carnivores and non-bipedal.
INSUFFICIENT
(1+2)
Putting the two statements together, one now can complete the 3x3 matrix to look like:
\begin{tabular}{|l|l|l|l|}
\hline
~ & B & nB & Total \\ \hline
C & \(\frac{4}{10}\)b /\(\frac{6}{10}\)c & \(\frac{4}{10}\)c & c \\ \hline
nC & \(\frac{6}{10}\)b & 0 & \(\frac{6}{10}\)b \\ \hline
Total & b & \(\frac{4}{10}\)c & 100 \\ \hline
\end{tabular}
One has \(b + \frac{4}{10} = 100 \) and \(c + \frac{6}{10}b = 100\).
Making them equal one another: \(b + \frac{4}{10} = c + \frac{6}{10}b\)
\(\frac{4}{10}b = \frac{6}{10}c\)
\(4b = 6c\)
\(\frac{b}{c} = \frac{6}{4}\)
Which means of the total dinosaurs in the exhibit \(\frac{4}{10}\) or \(40\)% are bipedal and \(\frac{6}{10}\) or \(60%\) are carinovers.
The number of dinosaurs in the exhibit which are both carnivores and bipedal is \(\frac{4}{10}b\), which is \(60\)% of the total dinosaurs. Therefore, the percentage of the dinosaurs in a certain museum exhibit were both bipeds and carnivores: \(24\)%
SUFFICIENT
ANSWER C
22 Aug 2024, 07:30
Kudos
Bookmarks
Let, Total Dinosaurs = Carnivorous Bipeds (cb) + Non-Carnivorous Bipeds (ncb) + Non-Biped Carnivorous (nbc) + Non-Biped Non-Carnivorous (nbnc)
Total Bipeds = cb + ncb = B .................................(1)
Total Carnivores = cb + nbc = C ...........................(2)
We want to find \(\frac{cb}{cb+ncb+nbc+nbnc}\) ..........................(3)
St. 1 tells ncb = 0.6B and cb = 0.6C
From 1, cb = 0.4B
Therefore, B = 1.5C
nbc = 0.26B
We have cb, ncb, and nbc in terms of B; but, we don't have anything for nbnc. Hence, we can't solve (3). Not Sufficient
St. 2 tells nbnc is 0
It doesn't tell anything about cb, ncb, and nbc. Can't solve (3). Not Sufficient
St.1 and St.2 together solve our problem of not having value for nbnc in St.1
We can now substitute ncb = 0.6B, cb = 0.4B, nbc = 0.26B, and nbnc = 0 in (3) and get an answer. Sufficient
Answer. C
Total Bipeds = cb + ncb = B .................................(1)
Total Carnivores = cb + nbc = C ...........................(2)
We want to find \(\frac{cb}{cb+ncb+nbc+nbnc}\) ..........................(3)
St. 1 tells ncb = 0.6B and cb = 0.6C
From 1, cb = 0.4B
Therefore, B = 1.5C
nbc = 0.26B
We have cb, ncb, and nbc in terms of B; but, we don't have anything for nbnc. Hence, we can't solve (3). Not Sufficient
St. 2 tells nbnc is 0
It doesn't tell anything about cb, ncb, and nbc. Can't solve (3). Not Sufficient
St.1 and St.2 together solve our problem of not having value for nbnc in St.1
We can now substitute ncb = 0.6B, cb = 0.4B, nbc = 0.26B, and nbnc = 0 in (3) and get an answer. Sufficient
Answer. C
