GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 19 Oct 2019, 08:53

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

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

If a – b = c, what is the value of b ? (1) c + 6 = a (2) a = 6

Author Message
TAGS:

Hide Tags

Senior RC Moderator
Joined: 02 Nov 2016
Posts: 4125
GPA: 3.39
If a – b = c, what is the value of b ? (1) c + 6 = a (2) a = 6  [#permalink]

Show Tags

18 Feb 2019, 10:59
00:00

Difficulty:

25% (medium)

Question Stats:

79% (00:41) correct 21% (01:16) wrong based on 33 sessions

HideShow timer Statistics

If a – b = c, what is the value of b ?

(1) c + 6 = a

(2) a = 6

_________________
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5020
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If a – b = c, what is the value of b ? (1) c + 6 = a (2) a = 6  [#permalink]

Show Tags

18 Feb 2019, 11:03
1
If a – b = c, what is the value of b ?

(1) c + 6 = a

(2) a = 6

given a-b=c
or say b= a-c

#1
c+6=a
a-c=6
so b = 6
sufficient
#2
a=6
no value of c known
in sufficeint
IMO A
Manager
Joined: 24 Dec 2017
Posts: 185
Location: India
Concentration: Strategy, Real Estate
Schools: Johnson '21
Re: If a – b = c, what is the value of b ? (1) c + 6 = a (2) a = 6  [#permalink]

Show Tags

19 Feb 2019, 00:30
a-b = c
a-c = b

St1:
c+6=a
6=a-c
Hence b=6
Sufficient

St2:
a=6
6-c=b
6=b+c
Insufficient

IMO A
Re: If a – b = c, what is the value of b ? (1) c + 6 = a (2) a = 6   [#permalink] 19 Feb 2019, 00:30
Display posts from previous: Sort by