Question:If `7 : x = 17.5 : 22.5`, then the value of `x` is : 

A `9` 
B `7.5` 
C `6` 
D `5.5` 

+ Answer
A 

+ Explanation
`7 xx 22.5 = x xx 17.5`

`iff``x =(7 xx 22.5)/(17.5)`

`iff``x = 9`.

+ Report

Md. Habib Ullah

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