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 1810:00 AM PDT
-11:00 AM PDT
Join us in a live GMAT practice session and solve 25 challenging GMAT questions with other test takers in timed conditions, covering GMAT Quant, Data Sufficiency, Data Insights, Reading Comprehension, and Critical Reasoning questions.
May 1212:00 PM EDT
-11:59 PM EDT
Make the most of your break with the most realistic GMAT™ prep. Take up to $700 off select products. Ends 6/1
May 1501:00 PM IST
-11:00 AM IST
Start your journey with a fully customized action plan and work with a dedicated mentor to achieve a 735+ score.- May 19
12:00 PM PDT
-01:00 PM PDT
Scoring 329 on the GRE is not always about using more books, more courses, or a longer study plan. In this episode of GRE Success Talks, Ashutosh shares his GRE preparation strategy, study plan, and test-day experience, explaining how he kept his prep.... - Jun 10
06:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
19 May 2020, 06:08
Kudos
Bookmarks
B
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:
69% (02:37) correct
31%
(02:04)
wrong
based on 99
sessions
History
Date
Time
Result
Not Attempted Yet
If a = 3.78xy7 and b = 1.37486, where x and y are positive digits, what is the value of a + b?
(1) If a and b are rounded to nearest thousandths digit, then a + b = 5.162
(2) If a and b are rounded to nearest ten-thousandths digit, then a + b = 5.1622
Are You Up For the Challenge: 700 Level Questions
(1) If a and b are rounded to nearest thousandths digit, then a + b = 5.162
(2) If a and b are rounded to nearest ten-thousandths digit, then a + b = 5.1622
Are You Up For the Challenge: 700 Level Questions
19 May 2020, 06:58
Kudos
Bookmarks
Bunuel
Solution
Step 1: Analyse Question Stem
- • \(a = 3.78xy7\)
• \(b = 1.37486\)
• \(0 < x ≤ 9\)
• \(0 < y ≤ 9\)
• We need to find the value of a + b
- o We can find exact value of a + b only if we know x and y.
Step 2: Analyse Statements Independently (And eliminate options) – AD/BCE
Statement 1: If a and b are rounded to nearest thousandths digit, then a + b = 5.162
- • b rounded to its thousandths place \(= 1.375\)
• Thus, a rounded to its thousandths place \(= 5.162 - 1.375 = 3.787\)
• Since, a is rounded to it’s thousandths place, so there can be two cases as given below:
- o Case 1 : If \(y < 5\), then \(a = 3.78x = 3.787 ⟹ x = 7\)
o Case 2: If \(y ≥ 5\), then then \(a = 3.78(x+1) = 3.787 ⟹ x = 6\)
Statement 2: If a and b are rounded to nearest ten-thousandths digit, then a + b = 5.1622
- • b rounded to its ten-thousandths place = 1.3749
• Thus, a rounded to its ten-thousandths place = 3.78x(y+1) = 5.1622 - 1.3749 = 3.7873
- o This means, \(x = 7\) and \(y = 2\)
Thus, the correct answer is Option B.
21 May 2020, 21:02
Kudos
Bookmarks
This one is not as straight-forward as it seems. See the attachment.
Attachments
1.PNG [ 28.39 KiB | Viewed 2152 times ]
