Question:If` 90%` of A `= 30%` of B and B`= x%` of A, then x is equal to : 

A `900` 
B `300` 
C `800` 
D `600` 

+ Answer
B 

+ Explanation
`90/(100) A`

`= 30/(100) B ⇒ B`

`= 90/100 xx 100/(30) A`

`= 300/(100) A`

`= 300% of A.`

+ Report

Irin Moni

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