Question:If `x : y = 5 : 2`, then the value of `(8x + 9y) : (8x + 2y)` is : 

A `26 : 61` 
B `61 : 26` 
C `29 : 22` 
D `22 : 29` 

+ Answer
C 

+ Explanation
Given : `x/y = 5/2`.

 `:. (8x + 9y)/(8x + 2y)`
 
`= (8 ( x/y) + 9)/(8 (x/y) + 2)`

 `=(8 xx 5/2 + 9)/(8 xx 5/2 + 2)`

 `= 29/22`.

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Md. Habib Ullah

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