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4 x + y CANNOT be

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4 x + y CANNOT be

by sanju09 » Wed Sep 15, 2010 1:06 am
If x and y are integers and 2 x - y = 11, then 4 x + y CANNOT be
(A) -5
(B) 1
(C) 13
(D) 17
(E) 55



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by lokesh r » Wed Sep 15, 2010 2:33 am
Given 2X-Y=11 And X AND Y are integers.

X=(11+Y)/2;..................(1)

from (1)

4X+Y= 22+3Y.

From the options, only D does not satify condition.

Say 22+3Y=17
3Y=5.

AS question states Y as integer, there is no integral value for 'y' satisfying 3Y=5.
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by sanju09 » Wed Sep 15, 2010 3:00 am
lokesh r wrote:Given 2X-Y=11 And X AND Y are integers.

X=(11+Y)/2;..................(1)

from (1)

4X+Y= 22+3Y.

From the options, only D does not satify condition.

Say 22+3Y=17
3Y=5.

AS question states Y as integer, there is no integral value for 'y' satisfying 3Y=5.
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The mind is everything. What you think you become. -Lord Buddha



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