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The mean weight per student in a group...

The mean weight per student in a group of 7 students is 55 kg. The individual weights of 6 of them (in kg) are 52, 54,55, 53, 56 and 54. Find the weight of the seventh student.

A

61 kg

B

60 kg

C

57 kg

D

50 kg

Text Solution

Verified by Experts

The correct Answer is:
C
The total weight of seven students is `55xx7=385 kg`
The sum of the weights of six students is 52+58+55+53+56+54=328 kg
Hence, the weight of the seventh student is 385-328=57 kg
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