Question:If` x : y = 3 : 4,` then `(2x + 3y) : (3y - 2x) = ?` 

A `2 : 1` 
B `3 : 2` 
C `3 : 1` 
D `21 : 1` 

+ Answer
C 

+ Explanation
Given `x/y = 3/4`

`:. (2x + 3y)/(3y - 2x)`

`= (2 (x/y) + 3)/(3 - 2 (x/y)`

`= (2 xx (3/4) + 3)/(3 - 2 xx (3/4)`

`= 18/6 = 3/1`

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Irin Moni

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