SSC CPO SI and ASI Model Paper 3

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Question : 125 of 200

Marks: +1, -0

If

x + y =7 √{xy}

then what is the value of

[x /Y+ y/ x]

?

$7 /47$
$47/ 7$
7
47

Solution:

4) Since,

(x+ y)^2= (7√{xy})^2

⇒x ^2+y^2+ 2xy 49xy

⇒

x ^2+y^2 =47xy

and hence,

x /y +y/x={x^2+ y^2}/{xy}= {47xy}/{xy}- 47

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