Forum Home > GMAT > Quantitative > Problem Solving (PS)
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.
Dec 0610:00 AM PST
-11:00 AM PST
In this video, we uncover the top errors applicants unknowingly make during MBA interviews and provide actionable tips to avoid them. Watch it carefully to avoid the common mistakes committed by applicants in delivering interviews.
Dec 0711:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment- Dec 08
11:00 AM IST
-01:00 PM IST
Attend this session to evaluate your current skill level, learn process skills, and solve through tough Arithmetic questions.
17 Mar 2015, 09:39
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (00:28) correct
12%
(00:42)
wrong
based on 209
sessions
History
Date
Time
Result
Not Attempted Yet
Does x – y = 200?
(1) x=10^2
(2) x=100 and y=-100
(1) x=10^2
(2) x=100 and y=-100
Hi All,
I know this maybe an easy question, but I don't understand where i'm going wrong.
I figured the answer would be D, however the official answer shows as B. Could someone help me explain how the answer is B and not D please?
I know this maybe an easy question, but I don't understand where i'm going wrong.
I figured the answer would be D, however the official answer shows as B. Could someone help me explain how the answer is B and not D please?
17 Mar 2015, 10:02
Kudos
Bookmarks
pinkcupcake
Hi All,
I know this maybe an easy question, but I don't understand where i'm going wrong.
Does x – y = 200?
(1) x=10^2
(2) x=100 and y=-100
I figured the answer would be D, however the official answer shows as B. Could someone help me explain how the answer is B and not D please?
I know this maybe an easy question, but I don't understand where i'm going wrong.
Does x – y = 200?
(1) x=10^2
(2) x=100 and y=-100
I figured the answer would be D, however the official answer shows as B. Could someone help me explain how the answer is B and not D please?
The question asks whether x – y = 200.
From (1) we know that x=100, without knowing value of y, how can we say whether x – y = 200? If y=-100, then the answer is YES but if y is any other number then the answer is NO. Not sufficient.
(2) gives the values of both x and y, so we can calculate whether x – y = 200. Sufficient.
Answer: B.
Hope it's clear.
adityadon
Joined: 18 Mar 2014
Last visit: 07 Oct 2024
Posts: 205
Own Kudos:
Given Kudos: 177
Location: India
Concentration: Operations, Strategy
Schools: INSEAD Jan '17 NTU '17 NUS '17 (D) Rutgers '18 SMU '16 (A) Weatherhead '18 (S) Broad '17 (M)
GMAT 1: 670 Q48 V35
GPA: 3.19
WE:Information Technology (Computer Software)
Schools: INSEAD Jan '17 NTU '17 NUS '17 (D) Rutgers '18 SMU '16 (A) Weatherhead '18 (S) Broad '17 (M)
GMAT 1: 670 Q48 V35
Posts: 205
Kudos:
144
17 Mar 2015, 10:14
Kudos
Bookmarks
pinkcupcake
Hi All,
I know this maybe an easy question, but I don't understand where i'm going wrong.
Does x – y = 200?
(1) x=10^2
(2) x=100 and y=-100
I figured the answer would be D, however the official answer shows as B. Could someone help me explain how the answer is B and not D please?
I know this maybe an easy question, but I don't understand where i'm going wrong.
Does x – y = 200?
(1) x=10^2
(2) x=100 and y=-100
I figured the answer would be D, however the official answer shows as B. Could someone help me explain how the answer is B and not D please?
This is a typical Yes/no Ds question which means expected answer should be either yes or no.
Question is not asking you to Calculate value.
Using 1st statement , you know x=100 but no idea about Y. so insufficient
Using 2nd statement , 100-(-100)=100+100=200 , so you get answer here as YES, x-y =200 so Statement 2 alone suffiecient . (please not if you had got answer as NO , x-y is not equal to 200 then also this statement would be sufficient )
hope this helps
