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

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(90-8(20:4))/(1/2)  [#permalink]

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New post 07 Feb 2012, 02:59
1
1
00:00
A
B
C
D
E

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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Re: (90-8(20:4))/(1/2)  [#permalink]

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New post 07 Feb 2012, 03:05
= (90 - 2*20)/(1/2)
= 50 * 2
= 100

Option (C)
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Re: (90-8(20:4))/(1/2)  [#permalink]

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New post 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

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Re: (90-8(20:4))/(1/2)  [#permalink]

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New post 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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Re: (90-8(20:4))/(1/2)  [#permalink]

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New post 03 Apr 2012, 07:02
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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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New post 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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