Question:In an examination `1100` boys and `900` girls appeared. `50%` of the boys and `40%` of the girls passed the examination. The percentage of candidates failed is : 

A `45` 
B `45.5` 
C `54.5` 
D `59.2` 

+ Answer
C 

+ Explanation
Number of failures 

`= (50% of 1100 + 60% of 900)`

`= (50/100 xx 1100 + 60/100 xx 900)`

`= 1090.`

Required percentage

`= (1090/2000 xx 100)%`

`= 54.5%`

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Irin Moni

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