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Question

In the following question, two equations numbered I and II are given. Solve both the equations and mark the appropriate option:

I.(x+3)(y+2)=12
II.2xy+4x+5y=11
 


A
if x > y
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B
if x < y
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C
if x y
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D
if x ≤ y
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E
if x = y or definite relationship cannot be established between ‘x’ and ‘y’
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Solution

The correct option is B if x > y
I. xy+2x+3y+6 = 12 2xy+4x+6y = 12II. 2xy+4x+5y = 11
Subtracting (ii) from (i), we get
 y=1
Putting the value of y in (i), we get
 x=3
Hence,x>y

Quantitative Aptitude

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