OG2015 PS 1âˆ’(1/2âˆ’2/3)

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lionsshare: Senior | Next Rank: 100 Posts; Posts: 62; Joined: Wed Aug 09, 2017 3:54 pm

by lionsshare » Wed Sep 13, 2017 2:24 am

1âˆ’(1/2âˆ’2/3)=

(A) 6/5
(B) 7/6
(C) 6/7
(D) 5/6
(E) 0

OA: B

Could anyone please, share the solution to this problem. Thank you.

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Source: Beat The GMAT — Problem Solving | Wed Sep 13, 2017 2:24 am

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Wed Sep 13, 2017 8:10 am

lionsshare wrote:1 âˆ’ (1/2 âˆ’ 2/3) =

(A) 6/5
(B) 7/6
(C) 6/7
(D) 5/6
(E) 0

1 âˆ’ (1/2 âˆ’ 2/3) = 1 âˆ’ (3/6 âˆ’ 4/6)
= 1 âˆ’ (âˆ’1/6)
= 1 + 1/6
= 7/6

Answer: B

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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Scott@TargetTestPrep: GMAT Instructor; Posts: 8137; Joined: Sat Apr 25, 2015 10:56 amFollowed by: 29 members; Location: Los Angeles, CA; Thanked: 43 times

by Scott@TargetTestPrep » Wed Sep 20, 2017 2:37 pm

lionsshare wrote:1âˆ’(1/2âˆ’2/3)=

(A) 6/5
(B) 7/6
(C) 6/7
(D) 5/6
(E) 0

We can simplify the given equation:

1 - (3/6 - 4/6) = 1 - (-1/6) = 1 + 1/6 = 7/6

Answer: B

Scott Woodbury-Stewart
Founder and CEO
[email protected]

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