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

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

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New post 12 Dec 2012, 10:13
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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
[Reveal] Spoiler: OA

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

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New post 12 Dec 2012, 10:15
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Walkabout wrote:
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 \(\frac{length}{8}=\frac{3.3}{2}\) --> \(length=8*\frac{3.3}{2}=13.2\).

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

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New post 12 Sep 2014, 01:52
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Walkabout wrote:
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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Re: The ratio of the length to the width of a rectangular advert [#permalink]

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New post 12 Sep 2014, 02:16
Answer \(= 3.3 * \frac{8}{2} = 13.2\)

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

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

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New post 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

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

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New post 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

Which is answer C

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

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New post 30 Aug 2017, 14:42
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Walkabout wrote:
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

Answer:
[Reveal] Spoiler:
C



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

Answer:
[Reveal] Spoiler:
C


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

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New post 02 Sep 2017, 07:19
Walkabout wrote:
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.

The closest answer is 13.

Answer: C
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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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