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souvik101990
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Expert reply
18 May 2018, 11:42
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A
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:
65% (01:43) correct
35%
(01:36)
wrong
based on 326
sessions
History
Date
Time
Result
Not Attempted Yet
If Alyssa is twice as old as Brandon, by how many years is Brandon older than Clara?
(1) Four years ago, Alyssa was twice as old as Clara is now.
(2) Alyssa is 8 years older than Clara.
Give your best shot at writing a top notch explanation and you will have the chance to win GMAT Club tests daily and GMAT On-Demand Prep by Veritas Prep. See the GMAT Spring Training Thread for all details
(1) Four years ago, Alyssa was twice as old as Clara is now.
(2) Alyssa is 8 years older than Clara.
GST Week 6 Day 4 Veritas Prep Question 4
Give your best shot at writing a top notch explanation and you will have the chance to win GMAT Club tests daily and GMAT On-Demand Prep by Veritas Prep. See the GMAT Spring Training Thread for all details
18 May 2018, 12:03
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souvik101990
Given: -
A=2B...............................................(i)
What do we need to find?
B-C=?
Statement 1: -
A-4 =2C
Substitute (i) in the equation
2B-4=2C
B-C = 2
SUFFICIENT
Statement 2: -
A=C+8
Substitute (i) back in the equation
2B=C+8
2B-C=8
We can't proceed ahead after this
INSUFFICIENT
Hence answer is A
18 May 2018, 12:11
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souvik101990
Given:
A=2B
We have to find
B-C
Statement 1: -
A-4 =2C
Then
2B-4=2C
B-C = 2
SUFFICIENT
Statement 2: -
A=C+8
Then
2B-C=8
INSUFFICIENT
hence A
