SSC CPO SI and ASI 2011 Paper

Question : 113 of 200

Marks: +1, -0

If x : y = 3 : 4, then (4x + 5y) : (5x – 2y) =

Solution:

(2)

{4 x+5 y}/{5 x-2 y}= { {4 x}/{y}+ {5 y}/{y}}/{\ {5 x}/{y}- {2 y}/{y}}

= {4 {x}/{y}+5}/{5 {x}/{y}-2}= {4 ×{3}/{4}+5}/{5×{3}/{4}-2}

= {8 4}/{15-8}= {32}/{7}

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