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− 30 ≤ 6x ≤ 60 and 40 ≥ 2y + 4 ≥ 8
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21 Oct 2018, 02:56
21 Oct 2018, 02:56
Expert Reply
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Question Stats:
78% (01:04) correct
21% (01:13) wrong based on 42 sessions
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\(− 30 ≤ 6x ≤ 60\) and \(40 ≥ 2y + 4 ≥ 8\)
What is the greatest possible value of x − y ?
What is the greatest possible value of x − y ?
Show: :: OA
8
Re: − 30 ≤ 6x ≤ 60 and 40 ≥ 2y + 4 ≥ 8
[#permalink]
06 Nov 2018, 10:15
06 Nov 2018, 10:15
Expert Reply
Carcass wrote:
\(− 30 ≤ 6x ≤ 60\) and \(40 ≥ 2y + 4 ≥ 8\)
What is the greatest possible value of x − y ?
What is the greatest possible value of x − y ?
Show: :: OA
8
\(− 30 ≤ 6x ≤ 60......− 5 ≤ x ≤ 10\) and \(40 ≥ 2y + 4 ≥ 8.........36 ≥ 2y ≥ 4............18 ≥ y ≥ 2\)
Now we are looking for the greatest possible value of x − y, we will look for max value of x and minimum value of y..
so max x=10 and minimum y = 2, so x-y = 10-2=8
gmatclubot
Re: − 30 ≤ 6x ≤ 60 and 40 ≥ 2y + 4 ≥ 8 [#permalink]
06 Nov 2018, 10:15
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