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# Machine M processes a certain chemical product at a constant rate. Doe

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Manager
Joined: 18 Feb 2015
Posts: 82
Machine M processes a certain chemical product at a constant rate. Doe  [#permalink]

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Updated on: 10 Jul 2016, 06:50
3
00:00

Difficulty:

25% (medium)

Question Stats:

84% (01:53) correct 16% (01:41) wrong based on 134 sessions

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Machine M processes a certain chemical product at a constant rate. Does machine M process the product at a rate that is greater than 25 grams per second= (1 kilogram = 1000 grams)?

(1) Machine M processes the product at a rate that is greater than 92 kilograms per hour
(2) Machine M processes the product at a rate that is less than 95 kilograms per hour

Originally posted by HarveyKlaus on 10 Jul 2016, 02:42.
Last edited by Bunuel on 10 Jul 2016, 06:50, edited 1 time in total.
Renamed the topic and edited the question.
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Joined: 26 Nov 2012
Posts: 586
Re: Machine M processes a certain chemical product at a constant rate. Doe  [#permalink]

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10 Jul 2016, 05:21
1
HarveyKlaus wrote:
Machine M processes a certain chemical product at a constant rate. Does machine M process the product at a rate that is greater than 25 grams per second= (1 kilogram = 1000 grams)?

A) Machine M processes the product at a rate that is greater than 92 kilograms per hour
B) Machine M processes the product at a rate that is less than 95 kilograms per hour

Any ideas?
Thanks

This is how I tried.

We need to find the whether Machine A can process more than 25 grams per second.

From Stat 1 ) 92 * 1000 / 60 * 60 = 25.5 > 25 grams and if we consider some number greater than 92, for ex 93, 94,95 etc then the rate will be always greater 25.
From Stat 2 ) 95 * 1000 / 60 * 60 = 26.6 > 25. But we consider some number less 95, for ex 40,50 70 , 80 etc it will lesser than 25.

Option A is correct.

Will correct if the above method is incorrect.
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Joined: 02 Mar 2012
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Schools: Schulich '16
Re: Machine M processes a certain chemical product at a constant rate. Doe  [#permalink]

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10 Jul 2016, 06:44
25 gm/sec is 90kg/hr

so now u can see 1 statement is clearly sufficient.
2 can be or not
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Posts: 11667
Re: Machine M processes a certain chemical product at a constant rate. Doe  [#permalink]

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25 Feb 2018, 17:48
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Re: Machine M processes a certain chemical product at a constant rate. Doe   [#permalink] 25 Feb 2018, 17:48
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