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# (90-8(20:4))/(1/2)

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Manager
Joined: 01 Dec 2011
Posts: 62

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07 Feb 2012, 02:59
1
1
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Difficulty:

5% (low)

Question Stats:

93% (00:35) correct 7% (00:29) wrong based on 134 sessions

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$$(90-8(20:4))/(1/2)$$

A) 25
B) 50
C) 100
D) 116
E) 170

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Joined: 24 Jul 2011
Posts: 1883
GMAT 1: 780 Q51 V48
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07 Feb 2012, 03:05
= (90 - 2*20)/(1/2)
= 50 * 2
= 100

Option (C)
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Joined: 04 Feb 2012
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Concentration: Entrepreneurship, General Management
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03 Apr 2012, 06:21
step one: 20/4=5
step two: 8*5=40
step three:90-40=50

step four:option A (retain the fraction)=50/(1/2)=>(50/1)/(1/2)=>100/1=>100

option B (transform fraction to decimal)=1/2=0.5 so we have...50/0,5=>500/5=>100

Manager
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03 Apr 2012, 06:55
fiendex wrote:
$$(90-8(20:4))/(1/2)$$

A) 25
B) 50
C) 100
D) 116
E) 170

...does : means division....?

i got confused there...but others have imagined or used : as \..... well if its \, then the answer is X
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Manager
Joined: 13 Mar 2012
Posts: 202
Concentration: Operations, Strategy

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03 Apr 2012, 07:02
1
harshavmrg wrote:
fiendex wrote:
$$(90-8(20:4))/(1/2)$$

A) 25
B) 50
C) 100
D) 116
E) 170

...does : means division....?

i got confused there...but others have imagined or used : as \..... well if its \, then the answer is X

yeah its ratio i.e. 20:4 =20/4

HTH
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02 Mar 2018, 22:23
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: (90-8(20:4))/(1/2)   [#permalink] 02 Mar 2018, 22:23
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