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 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 2601:30 AM EDT
-02:30 AM EDT
Learn how Keshav, a Chartered Accountant, scored an impressive 705 on GMAT in just 30 days with GMATWhiz's expert guidance. In this video, he shares preparation tips and strategies that worked for him, including the mock, time management, and more.
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.
May 0111:00 AM PDT
-12:00 PM PDT
Free- full-length test + 15 concept videos + 150+ short videos + study plan!
21 Feb 2019, 12:52
Kudos
Bookmarks
A
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:
35% (02:44) correct
65%
(02:36)
wrong
based on 127
sessions
History
Date
Time
Result
Not Attempted Yet
What is the tens digit of two-digit positive integer w?
(1) The tens digit of 2w is equal to the tens digit of w.
(2) The sum of the digits of w+5 is 5.
(1) The tens digit of 2w is equal to the tens digit of w.
(2) The sum of the digits of w+5 is 5.
eabhgoy
Joined: 12 Apr 2011
Last visit: 14 Jan 2021
Posts: 112
Given Kudos: 85
Location: United Arab Emirates
Concentration: Strategy, Marketing
Schools: CBS '21 Yale '21 INSEAD Jan'21 Intake IMD '21 (A)
GMAT 1: 670 Q50 V31
GMAT 2: 720 Q50 V37
GPA: 3.2
WE:Marketing (Telecommunications)
21 Feb 2019, 13:26
Kudos
Bookmarks
kevincan
This took a while to solve!
from statement 1 we are told that 2*w and w share the same number in the tens digit.
now lets assume w is either from 10-20----90s or 19-29-39---99 series to test the extremes:
hence:
If w is:
10-20-30-40-50-60-70-80-90
2w will be:
20-40-60-80-100-120-140-160-180
or 2nd case:
w is
19-29-39-49-59-69-79-89-99
2w will be:
38-58-78-98-118-138-158-178-198
from the above we see only if w = 99 then 2w = 198 and satisfies the first statement. We also have other solutions such 95, 96, 97, 98, 99
Hence 1 is insufficient
Now in the second statement we are told: w+5 leads to a digit whose sum is 5.
Possible solutions are: 23, 32, 41, 50, 104
i.e. w = 18, 27, 36, 45, or 99
Again 2 is insufficient.
But if we combine 1 & 2 we get w=99
Hence both are required and C is the correct answer.
21 Feb 2019, 19:04
Kudos
Bookmarks
eabhgoy
The question is asking for only the tens digit, so therefore 1 is sufficient and two is insufficient since 27 and 99 can both be possible solutions.
Therefore answer is A
