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.
May 1609:00 PM PDT
-10:00 PM PDT
Full-length FE mock with insightful analytics, weakness diagnosis, and video explanations!
May 1706:30 AM PDT
-08:30 AM PDT
We know Strengthen and Weaken questions account for more than 50% of the CR questions on the GMAT. With CR becoming even more important on GMAT Focus, it's time you strengthen your weaknesses with an approach that improves your solving time and accuracy!
May 1711:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.
May 1806:30 AM PDT
-08:30 AM PDT
Join Piyush Beriwala in this webinar as he guides you through a smart study plan to achieve the 99th %ile on the GMAT Focus. Learn the best strategies and tips to master the test and boost your score.
Jun 1006:00 AM PDT
-05:30 PM PDT
Register for the GMAT Club Virtual MBA Spotlight fair, the biggest MBA fair of the year. You will have a chance to hear Admissions directors from almost every Top 20 program speak, network with peers, and conveniently attend morning or afternoon sessions.
akurathi12
GMAT 1: 490 Q47 V13
Posts: 111
12 Jan 2019, 13:36
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
62% (02:24) correct
38%
(02:31)
wrong
based on 401
sessions
History
Date
Time
Result
Not Attempted Yet
The price of a pastry at 10 AM was $p. Each hour after 11 AM, the price decreases by 20%. If Julie bought the pastry at 11:15 AM whereas her sister bought the same 3 hours later, then the price paid by Julie's sister was what percent less than that paid by Julie?(There is no price change apart from those mentioned above)
A. 33.33%
B. 37.5%
C. 48.8%
D. 51.2%
E. None of these
A. 33.33%
B. 37.5%
C. 48.8%
D. 51.2%
E. None of these
12 Jan 2019, 15:34
Kudos
Bookmarks
visualizing the time line:
10:00 <---(p)---> 11:00 <---(p)---> 12:00 <---(\(\frac{4}{5}\)p)---> 13:00 <---(\((\frac{4}{5})^2\)p)---> 14:00 <---(\((\frac{4}{5})^3\)p)---> 15:00
Julie's price = p
sister's price = \((\frac{4}{5})^3\)p
\((\frac{4}{5})^3\)p = p(1- \(\frac{x}{100}\))
\((\frac{4}{5})^3\) = 1- \(\frac{x}{100}\)
\(\frac{x}{100}\) = 1 - \(\frac{64}{125}\)
x = \(\frac{61}{125} * 100\) = \(\frac{488}{1000} * 100\) = 48.8 %
So C IMO
10:00 <---(p)---> 11:00 <---(p)---> 12:00 <---(\(\frac{4}{5}\)p)---> 13:00 <---(\((\frac{4}{5})^2\)p)---> 14:00 <---(\((\frac{4}{5})^3\)p)---> 15:00
Julie's price = p
sister's price = \((\frac{4}{5})^3\)p
\((\frac{4}{5})^3\)p = p(1- \(\frac{x}{100}\))
\((\frac{4}{5})^3\) = 1- \(\frac{x}{100}\)
\(\frac{x}{100}\) = 1 - \(\frac{64}{125}\)
x = \(\frac{61}{125} * 100\) = \(\frac{488}{1000} * 100\) = 48.8 %
So C IMO
globaldesi
Joined: 28 Jul 2016
Last visit: 04 Mar 2025
Posts: 1,160
Given Kudos: 67
Location: India
Concentration: Finance, Human Resources
Schools: ISB '18 (D)
GPA: 3.97
WE:Project Management (Finance: Investment Banking)
Products:
20 Jan 2019, 12:15
Kudos
Bookmarks
at 11:15 price =\(4/5*p\) Let this price be p1
after three hours of 11:15 it will be \((4/5)^3 * (4/5*p)\)= \((256/625)*p\) let this price be p2
percentage decrease in price will be
\((p1-p2)/p1 *100\)
substitute the values
\(4/5*p\) - \((256/625)*p\) / \(4/5*p\) *100
= 48.88 %
= answer C
after three hours of 11:15 it will be \((4/5)^3 * (4/5*p)\)= \((256/625)*p\) let this price be p2
percentage decrease in price will be
\((p1-p2)/p1 *100\)
substitute the values
\(4/5*p\) - \((256/625)*p\) / \(4/5*p\) *100
= 48.88 %
= answer C
