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# (0.513)(0.488)(0.942)/(0.684)(0.314)(0.183)

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Intern
Joined: 09 Apr 2018
Posts: 1

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17 Apr 2018, 20:46
7
00:00

Difficulty:

65% (hard)

Question Stats:

58% (01:56) correct 42% (01:45) wrong based on 153 sessions

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What is the fastest way to solve this?

$$\frac{(0.513)(0.488)(0.942)}{(0.684)(0.314)(0.183)}$$

a) 4
b) 5
c) 6
d) 7
e) 8
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Joined: 24 Aug 2016
Posts: 798
GMAT 1: 540 Q49 V16
GMAT 2: 680 Q49 V33

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17 Apr 2018, 21:11
3
2
pandoraUM wrote:
What is the fastest way to solve this?

$$\frac{(0.513)(0.488)(0.942)}{(0.684)(0.314)(0.183)}$$

a) 4
b) 5
c) 6
d) 7
e) 8

I would like to use approximation of numbers as below:

$$\frac{(0.513)(0.488)(0.942)}{(0.684)(0.314)(0.183)}$$
=$$\frac{(513)(488)(942)}{(684)(314)(183)}$$
apx=$$\frac{(500)(500)(950)}{(700)(300)(190)}$$
apx=$$\frac{(5)(5)(5)}{(7)(3)}$$
apx=$$\frac{(5)(5)(5)}{(7)(3)}$$
apx=$$\frac{(125)}{(21)}$$
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##### General Discussion
Manager
Joined: 28 Nov 2017
Posts: 142
Location: Uzbekistan

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17 Apr 2018, 23:25
3
1
pandoraUM wrote:
What is the fastest way to solve this?

$$\frac{(0.513)(0.488)(0.942)}{(0.684)(0.314)(0.183)}$$

a) 4
b) 5
c) 6
d) 7
e) 8

$$\frac{(0.513)(0.488)(0.942)}{(0.684)(0.314)(0.183)}$$ $$=$$ $$\frac{(3*0,171)(8*0,061)(3*0,314)}{(4*0,171)(0.314)(3*0,061)}$$ $$=$$ 6

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Tulkin.
Director
Joined: 02 Oct 2017
Posts: 726

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02 May 2018, 06:57
Take approximate values and solve

0.5*0.5*1/(0.7*0.3*0.2)
=125/21
Approx 6
as 21*6=216

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07 Aug 2019, 18:58
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Re: (0.513)(0.488)(0.942)/(0.684)(0.314)(0.183)   [#permalink] 07 Aug 2019, 18:58
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