Question:If `p : q = 3 : 4` and `q : r = 8 : 9`, then `p : r` is : 

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

+ Answer
C 

+ Explanation
`p/r = (p/q : q/r)`

 `= 3/4 xx 8/9`

 `= 2/3`.

so, `p : r = 2 : 3`.

+ Report

Md. Habib Ullah

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