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 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 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
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.
18 Dec 2023, 07:00
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
33% (01:43) correct
67%
(01:49)
wrong
based on 189
sessions
History
Date
Time
Result
Not Attempted Yet
12 Days of Christmas 🎅 GMAT Competition with Lots of Questions & Fun
Starting December 1st, the Grinch begins deflating a red balloon filled with helium and a blue balloon filled with air at Santa's workshop. Each day, he releases m% of that day's remaining helium volume from the red balloon and n% of that day's remaining air volume from the blue balloon. After 10 days, will there be a greater volume of helium in the red balloon compared to the volume of air in the blue balloon?
(1) The ratio m to n is 3 to 1.
(2) The initial ratio of volumes of helium and air in the balloons were 6 to 5.
Starting December 1st, the Grinch begins deflating a red balloon filled with helium and a blue balloon filled with air at Santa's workshop. Each day, he releases m% of that day's remaining helium volume from the red balloon and n% of that day's remaining air volume from the blue balloon. After 10 days, will there be a greater volume of helium in the red balloon compared to the volume of air in the blue balloon?
(1) The ratio m to n is 3 to 1.
(2) The initial ratio of volumes of helium and air in the balloons were 6 to 5.
|
19 Dec 2023, 08:52
Kudos
Bookmarks
GMAT Club Official Explanation:
Starting December 1st, the Grinch begins deflating a red balloon filled with helium and a blue balloon filled with air at Santa's workshop. Each day, he releases m% of that day's remaining helium volume from the red balloon and n% of that day's remaining air volume from the blue balloon. After 10 days, will there be a greater volume of helium in the red balloon compared to the volume of air in the blue balloon?
Essentially we are given two quantities that decrease daily by m% and n%, respectively. The question is whether, after 10 days, the first quantity (helium) is greater than the second one (air).
(1) The ratio m to n is 3 to 1.
This tells us the ratio of the percent decrease. However, we know nothing about the initial values (volumes). Not sufficient.
(2) The initial ratio of volumes of helium and air in the balloons were 6 to 5.
This gives us the initial ratio of the quantities. However, we know nothing about the percent decreases. Not sufficient.
(1)+(2) Consider this logically rather than algebraically. Suppose the initial volumes are 60 m^3 of helium and 50 m^3 of air. If m and n are large, say 90% and 30%, then even after one day, more air than helium will remain. Conversely, if m and n are very small, like 0.00003% and 0.00001%, even after 100 days, more helium will remain due to the minuscule decrease rate. Therefore, even when combined, these statements do not provide a definitive answer. Not sufficient.
Answer: E.
General Discussion
18 Dec 2023, 13:31
Kudos
Bookmarks
Bunuel
(1) The ratio m to n is 3 to 1.
This statement provides the proportion between the percentages of helium released from the red balloon and air released from the blue balloon. Yet, lacking details about the initial volumes or daily release volumes, it is impossible to ascertain the absolute volumes for either balloon. Therefore, this statement alone does not offer sufficient information.
(2) The initial ratio of volumes of helium and air in the balloons were 6 to 5.
The initial balloon volume ratio is given, but daily gas release percentages are missing. We cannot determine relative volumes after 10 days without this information.
Statement (1) & (2)
By merging the two statements, we are aware of the initial volume ratio (from statement 2) and the percentage ratio by which the Grinch releases helium and air (from statement 1). Nevertheless, the details about the daily absolute volumes released are still missing. Consequently, we are unable to calculate the relative volumes of helium and air after 10 days. The combined statements do not provide sufficient information.
IMO E
