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What is the rate, in cubic meters per minute, at which water

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What is the rate, in cubic meters per minute, at which water  [#permalink]

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14 Dec 2012, 11:34
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What is the rate, in cubic meters per minute, at which water is flowing into a particular swimming pool with a rectangular base?

(1) The volume of the swimming pool is 420 cubic meters.
(2) The surface level of the water is rising at the rate of 0.5 meters per minute.

I first eliminated A,B,D quickly.

now, how can I tell what it takes to turn meters into cubic meters?
Lets say I dont know at all? how can I choose an answer besides guessing?

I guessed correctly but how in the world i could know?

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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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14 Dec 2012, 19:51
1) Insufficient. We are only given the volume of the pool. We still do not know the area.

2) Insufficient. We do not know the surface area of the pool. We need this piece of information to find the rate from the fact that the water is rising at 0.5 m/min

1 & 2 together. Still insufficient. The pool's dimensions can still be anything such as 12 x 5 x 7 or 12 x 7 x 5 or something else.

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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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15 Dec 2012, 00:26
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One more approach I would like to add.

The question asks what is the rate, cubic metres per minute, at which the water is flowing into the swimming pool?
So volume is l*b*h. Therefore required rate is (l*b*h)/t.

Statement 1 provides l*b*h=420. Insufficient.
Statement 2 provides h/t=0.5. Insufficient

On combining them, we cant find (l*b*h)/t. Both the statements combined are not sufficient.
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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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15 Dec 2012, 02:02
Marcab wrote:
One more approach I would like to add.

The question asks what is the rate, cubic metres per minute, at which the water is flowing into the swimming pool?
So volume is l*b*h. Therefore required rate is (l*b*h)/t.

Statement 1 provides l*b*h=420. Insufficient.
Statement 2 provides h/t=0.5. Insufficient

On combining them, we cant find (l*b*h)/t. Both the statements combined are not sufficient.

thanks
but how could i know how to turn meters into cubic meters?
i have also encountered a feet/inch problem where i had the same problem.
only after googling how to convert the two i managed to solve the question...
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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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15 Dec 2012, 02:23
roygush wrote:
Marcab wrote:
One more approach I would like to add.

The question asks what is the rate, cubic metres per minute, at which the water is flowing into the swimming pool?
So volume is l*b*h. Therefore required rate is (l*b*h)/t.

Statement 1 provides l*b*h=420. Insufficient.
Statement 2 provides h/t=0.5. Insufficient

On combining them, we cant find (l*b*h)/t. Both the statements combined are not sufficient.

thanks
but how could i know how to turn meters into cubic meters?
i have also encountered a feet/inch problem where i had the same problem.
only after googling how to convert the two i managed to solve the question...

Here no such complexity is required.
If I correctly interpreted your question, then your doubt is how to convert meters into cubic meters.

If length , breadth and height are in meters, then volume(length *breadth* height) will be in metres.
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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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Updated on: 15 Dec 2012, 05:07
Marcab wrote:
roygush wrote:
Marcab wrote:
One more approach I would like to add.

The question asks what is the rate, cubic metres per minute, at which the water is flowing into the swimming pool?
So volume is l*b*h. Therefore required rate is (l*b*h)/t.

Statement 1 provides l*b*h=420. Insufficient.
Statement 2 provides h/t=0.5. Insufficient

On combining them, we cant find (l*b*h)/t. Both the statements combined are not sufficient.

thanks
but how could i know how to turn meters into cubic meters?
i have also encountered a feet/inch problem where i had the same problem.
only after googling how to convert the two i managed to solve the question...

Here no such complexity is required.
If I correctly interpreted your question, then your doubt is how to convert meters into cubic meters.

If length , breadth and height are in meters, then volume(length *breadth* height) will be in metres.

without beat around the bush, simply you cannot convert meters to cubic because the first is a linear dimension the second one is a 3d dimension.

Again, without know anything you cannot convert lineart meters to cubic meters.

The question on an upper level on the gmat are not difficult per se, but they are because $$SEEM$$ difficult
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Originally posted by carcass on 15 Dec 2012, 04:32.
Last edited by carcass on 15 Dec 2012, 05:07, edited 1 time in total.
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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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15 Dec 2012, 04:36
But won't the volume, that is Length*Breadth*Height, be in cubic meters?
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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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15 Dec 2012, 05:20
You are right

i responded to the user's question on conversion fromm cubic meters to linear meters
Quote:
now, how can I tell what it takes to turn meters into cubic meters?

Is not possible. At least I know this

Coverserly, The question is E and not C

RT=W

You have W and T so easly you could calculate R but we have from 2) The surface level of the water is rising at the rate of 0.5 meters per minute. from 1) The volume of the swimming pool is 420 cubic meters.

how can we conciliate the two things ?' we don't......E

Correct me if I said something wrong, please
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Re: What is the rate, in cubic meters per minute, at which water  [#permalink]

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Re: What is the rate, in cubic meters per minute, at which water &nbs [#permalink] 26 Jan 2016, 08:26
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