Question:If `70%` of students in a school are boys and the number of girls is `504, the number of boys is : 

A `1680` 
B `1176` 
C `1276` 
D None of these 

+ Answer
B 

+ Explanation
`30% of x`

`= ⇒ 504 ⇒ 30/(100) x`

`= 504 ⇒ x`

`= (504 xx 100/30)`

`= 1680`

:. Number of boys 

`= 70% of 1680`

`= (70/100 xx 1680)`

`= 1176`

+ Report

Irin Moni

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