MGMAT Algebra Chapter 1PEMDAS

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yumi2012: Senior | Next Rank: 100 Posts; Posts: 64; Joined: Mon Jul 23, 2012 1:59 pm; Thanked: 1 times

MGMAT Algebra Chapter 1PEMDAS

by yumi2012 » Tue Aug 07, 2012 5:58 pm

Q4.

The question was
(4+8/2-(-6)) - (4-8/2-(-6))

And the answer says either -25/2 or -11 1/2.. How -25/2 translates into -11 and 1/2?

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Source: Beat The GMAT — Quantitative Reasoning | Tue Aug 07, 2012 5:58 pm

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

by Brent@GMATPrepNow » Wed Aug 08, 2012 7:29 am

yumi2012 wrote:Q4.

The question was
(4+8/2-(-6)) - (4-8/2-(-6))

And the answer says either -25/2 or -11 1/2.. How -25/2 translates into -11 and 1/2?

Definitely a typo.
Should be -25/2, or = -12 1/2

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com