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# The ratio of the length to the width of a rectangular advert

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Manager
Joined: 02 Dec 2012
Posts: 178
The ratio of the length to the width of a rectangular advert [#permalink]

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12 Dec 2012, 10:13
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Difficulty:

5% (low)

Question Stats:

91% (00:37) correct 9% (00:42) wrong based on 1433 sessions

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The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

(A) 7
(B) 11
(C) 13
(D) 16
(E) 26
Math Expert
Joined: 02 Sep 2009
Posts: 47101
Re: The ratio of the length to the width of a rectangular advert [#permalink]

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12 Dec 2012, 10:15
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1
The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

(A) 7
(B) 11
(C) 13
(D) 16
(E) 26

Given that $$\frac{length}{width}=\frac{3.3}{2}$$. Since $$width=8$$, then $$\frac{length}{8}=\frac{3.3}{2}$$ --> $$length=8*\frac{3.3}{2}=13.2$$.

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Manager
Joined: 07 Apr 2014
Posts: 119
Re: The ratio of the length to the width of a rectangular advert [#permalink]

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12 Sep 2014, 01:52
1
The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

(A) 7
(B) 11
(C) 13
(D) 16
(E) 26

l:w
3.3:2

given width is 8 then 2 *4 ....

we have to do the same with L to find the right ratio.

3.3 * 4 approx 13
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Posts: 1837
Location: India
Concentration: General Management, Technology
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Re: The ratio of the length to the width of a rectangular advert [#permalink]

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12 Sep 2014, 02:16
Answer $$= 3.3 * \frac{8}{2} = 13.2$$

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Manager
Joined: 02 Feb 2016
Posts: 97
Location: United States
Concentration: Finance, Technology
Schools: LBS '18, IE April '17
GMAT 1: 620 Q48 V27
Re: The ratio of the length to the width of a rectangular advert [#permalink]

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07 Mar 2016, 21:22
ratio is 3.3:2 and width is 8 which means multiplier is 4 (2*4=8). Hence multiply length by 4 as well, instead of 3.3 take 3
so length is 3*4=12 since it is just over it the answer should be 13 (to check multiply 0.3*4=1.2 and add to 12)
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Manager
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Re: The ratio of the length to the width of a rectangular advert [#permalink]

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25 Mar 2017, 12:13
we have ration l:w 3,3:2
and w is 8, then 8/2=4
4*3,3=cca 13
Senior Manager
Joined: 06 Dec 2016
Posts: 251
Re: The ratio of the length to the width of a rectangular advert [#permalink]

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25 Mar 2017, 21:21
My approach:

3.3 is the length
2 is the width

2/5.3 x a = 8
x = 8(5.3)/2
x = 21.2

3.3/5.3 x 21.2
3.3 x 4
13.2

CEO
Joined: 12 Sep 2015
Posts: 2633
Re: The ratio of the length to the width of a rectangular advert [#permalink]

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30 Aug 2017, 14:42
Top Contributor
The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

(A) 7
(B) 11
(C) 13
(D) 16
(E) 26

This is a matter of EQUIVALENT RATIOS
length/width: 3.3/2 = x/8

Approach #1
Notice that the width increases by a factor of 4 (from 2 to 8)
So, the length must increase be a factor of 4 as well.
3.3(4) = 13.2

Approach #2
3.3/2 = x/8
Cross multiply: (3.3)(8) = (2)(x)
Evaluate: 26.4 = 2x
Solve: x = 13.2

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Re: The ratio of the length to the width of a rectangular advert [#permalink]

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02 Sep 2017, 07:19
The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?

(A) 7
(B) 11
(C) 13
(D) 16
(E) 26

Let’s first set up our ratio using variable multipliers.

length : width = 3.3x : 2x

We are given that the width is 8 meters, so we set up the following equation:

2x = 8

x = 4

Thus, we know that the length is (4)(3.3) = 13.2 meters.

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Re: The ratio of the length to the width of a rectangular advert   [#permalink] 02 Sep 2017, 07:19
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