Question:A boy was asked to multiply a certain number by `25`.He multiplied it by `52` and got his answar more than the correct one by `324`. The number to be multipiesd was : 

A `12` 
B `15` 
C `25` 
D `32` 

+ Answer
A 

+ Explanation
Let the required number be x.Then ,

`52x - 25x`

`= 324`

or ` 27x=324`

or ` x= 12`.

:.Required number` = 12`.

+ Report

Irin Moni

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