The body weight of seven students of a class is recorded as 54 kg, 78 kg, 43 kg, 82 kg, 67 kg, 42 kg and 75… · ABC26GN1521
Subject: General Aptitude · Chapter: Average · Exam: Bank Recruitment 2010
The body weight of seven students of a class is recorded as $54 \mathrm{kg}, 78 \mathrm{kg}, 43 \mathrm{kg}, 82 \mathrm{kg}, 67 \mathrm{kg}$, 42 kg and 75 kg. What is the average body weight of all the seven students?
(a)63 kg
(b)69 kg
(c)71 kg
(d)73 kg
(e)None of these
Answer
Answer (as printed): A
Explanation
Average body weight $$\begin{aligned} & =\left(\frac{54+78+43+82+67+42+75}{7}\right) \mathrm{kg} \\ & =\left(\frac{441}{7}\right) \mathrm{kg}=63 \mathrm{kg} . \end{aligned}$$