Questions
The mean weight per student in a group of seven students is 55 kg. If the individual weights of six students are 52, 58, 55, 53, 56 and 54, then the weight of the seventh student is
a
55 kg
b
60 kg
c
57 kg
d
50 kg
detailed solution
Correct option is C
The total weight of seven students is 55 x 7 = 385 kg The sum of the weights of six students is 52 +58 + 55 + 53 + 56 + 54 =328kgHence, the weight of the seventh student is 385 - 328 = 57 kgTalk to our academic expert!
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