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Re: Rectangular Floors X and Y have equal area. If Floor X is 12 [#permalink]

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23 Jul 2012, 12:13

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E.) 24

Floor X has an area equivalent to 12 x 18 which simplifies into 2 x 6 x 9 x 2. Floor Y has the same area and we know one side is 9 feet. Simply dividing Floor X's area (2 x 6 x 9 x 2) by 9 will yield the length of the other side of Floor Y (24 or 2 x 6 x 2).

Re: Rectangular Floors X and Y have equal area. If Floor X is 12 [#permalink]

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12 Apr 2013, 08:47

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We can avoid lengthy math here due to the handout the question has given us. 12 x 18 for me at least would take some time to work out. Lucky for us the GMAT writers are aware of this and gave one side of the other rectangle as 9. We have an easy comparison here. 9 is 1/2 of 18. In order for their areas to be equal then we must double 12 which becomes 24. These tricks will help you use comparison to solve it in under 20 seconds.

Re: Rectangular Floors X and Y have equal area. If Floor X is 12 [#permalink]

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12 Apr 2013, 11:06

Sachin9 wrote:

I doubt if the difficulty level is 550 :D

it must be 350.. 18 secs it took. .

I think it's because it can be easy to make a really silly mistake, and not pay 100% attention to the question (Like with every question)
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Re: Rectangular Floors X and Y have equal area. If Floor X is 12 [#permalink]

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19 Apr 2016, 02:34

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Hello from the GMAT Club BumpBot!

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Re: Rectangular Floors X and Y have equal area. If Floor X is 12 [#permalink]

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19 Apr 2016, 11:05

area x equals area y 12 times 18 is 216m 216 divided by the width of y equals the length of y, which is 24.
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Took the Gmat and got a 520 after studying for 3 weeks with a fulltime job. Now taking it again, but with 6 weeks of prep time and a part time job. Studying every day is key, try to do at least 5 exercises a day.

Re: Rectangular Floors X and Y have equal area. If Floor X is 12 [#permalink]

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18 Sep 2017, 11:38

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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