Average marks obtained by a class of 60 students is 05. average marks of half of students is found t

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The average marks obtained by a class of $60$ students is $05.$ The average marks of half of the students is found to be $85 .$ The average marks of the remaining students is

A

$35$

B

$45$

C

$55$

D

$65$

Solution

Total Mark of Class $=60 \times 65=3900$

Total Mark of half of Class $=30 \times 85=2250$

$\therefore$ Average Mark of Remaining Students $=\frac{1350}{30}=45$

Standard 13

Quantitative Aptitude

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