The average of marks obtained by 120 candidat | vedclass

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Question

Let, the number of candidates who passed $=x$

Then, $39 	imes x+15 	imes(120-x)=120 	imes 35$

$	herefore \quad 24 x=4200-1800$

or, $x=\fr

Vedclass · Accepted Answer

$100$

Vedclass · Answer

Let, the number of candidates who passed $=x$

Then, $39 	imes x+15 	imes(120-x)=120 	imes 35$

$	herefore \quad 24 x=4200-1800$

or, $x=\frac{2400}{24}$

$x=100$

The average of marks obtained by $120$ candidates was $35.$ If the average of marks of passed candidates was $39$ and that of failed candidates was $15,$ the number of candidates who passed the examination is

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