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- Quantitative Aptitude
4.Average
easy
The average weight of $8$ sailors in a boat is increased by $1\, kg$ if one of them weighting $56\,kg$ is replaced by a new sailor. The weight of the new sailor is (in $kg$)
A
$57$
B
$60$
C
$64$
D
$62$
Solution
The sailor weighing $56 \,kg$ is replaced and the average is increased by $1 \,kg$. Hence, the weight of the newr sailor is $(56+$ increase in total weight) $=56+1 \times 8$ $=56+8=64 kg$
Standard 13
Quantitative Aptitude