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A machine works at a constant rate and can
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Updated on: 26 Sep 2017, 05:26
Updated on: 26 Sep 2017, 05:26
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73% (01:16) correct
26% (01:32) wrong based on 19 sessions
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A machine works at a constant rate and can produce \(a\) bolts in 15 minutes and b bolts in \(c\) hours
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
b |
3ac |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Originally posted by anuja on 20 Sep 2017, 07:36.
Last edited by IlCreatore on 26 Sep 2017, 05:26, edited 2 times in total.
Last edited by IlCreatore on 26 Sep 2017, 05:26, edited 2 times in total.
Edited by Carcass
Re: A machine works at a constant rate and can
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20 Sep 2017, 09:27
20 Sep 2017, 09:27
Expert Reply
Hi and welcome to the board.
First of all: do not post a screenshot but a question as text.
Here are the rules for posting on the board rules-for-posting-please-read-this-before-posting-1083.html and the way how to post a question in the right manner qq-how-to-post-a-gre-question-the-easy-way-2357.html.
Post also under the right section. Ask GRE expert is the section for asking: how long is the test, how many sections it has ...and so on...
Back to the question. For me is not a good question. which is the source?
if the machine produces \(a\) bolts in 15 minutes, we can assume if a = 5 the machine produce ONE bolt in 3 minutes. Now, if it produces 5 bolts in 15 minutes we do know that for instance in c hours, 1 hour, the machine does 20 bolts.
But quantity B says 3ac. considering c = 1 and a = 5 then 3*5 = 15 that is not possible.
However, yes B is always greater than A.
Ask if something is still unclear to you.
Regards
First of all: do not post a screenshot but a question as text.
Here are the rules for posting on the board rules-for-posting-please-read-this-before-posting-1083.html and the way how to post a question in the right manner qq-how-to-post-a-gre-question-the-easy-way-2357.html.
Post also under the right section. Ask GRE expert is the section for asking: how long is the test, how many sections it has ...and so on...
Back to the question. For me is not a good question. which is the source?
if the machine produces \(a\) bolts in 15 minutes, we can assume if a = 5 the machine produce ONE bolt in 3 minutes. Now, if it produces 5 bolts in 15 minutes we do know that for instance in c hours, 1 hour, the machine does 20 bolts.
But quantity B says 3ac. considering c = 1 and a = 5 then 3*5 = 15 that is not possible.
However, yes B is always greater than A.
Ask if something is still unclear to you.
Regards
Re: A machine works at a constant rate and can
[#permalink]
22 Sep 2017, 13:02
22 Sep 2017, 13:02
3
anuja wrote:
A machine works at a constant rate and can \(a\) produce bolts in 15 minutes and b bolts in \(c\) hours
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
b |
3ac |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Here
Since the rates are constant
therefore
\(\frac{a}{15}\) min = \(\frac{b}{60c}\) min ( since C is given in hour ie 60 minute)
Now b=\(\frac{60c * a}{15}\)
or b = 4ac i.e b> 3ac
Answer - option A.
