Average weight of 36 students is 50 ,kg . If was found later that weight of one of student was misre

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The average weight of $36$ students is $50 \,kg$. If was found later that the weight of one of the student was misread as $73 \,kg$. whereas his actual weight was $37 \,kg$. Find the correct average. (in $kg$)

A

$47$

B

$49.5$

C

$49$

D

$51$

Solution

Total correct weight of $36$ students

$=50 \times 36-73+3=1800-36=1764 kg$

Correct average $=\frac{1764}{36}=49 kg$

Standard 13

Quantitative Aptitude

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