The mean weight of a group of seven boys is 56 kg. The individual weights (in kg) of six of them are 52, 57, 55, 60, 59 and 55. Find the weight of the seventh boy.
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Answered by
3
Answer:
weight of the 7th boy = 54 kg
Step-by-step explanation:
let x be the weight of the 7th boy.
avg. of a gp of 7 boys = 56
(52+57+55+60+59+55+x)/7 = 56
338 + x = 56 * 7
338 + x = 392
x = 392-338
x = 54
Answered by
2
Answer:
Step-by-step explanation:
The mean weight of 7boys is 56
The weight of individuals is 52,57,55,60,59and55
Arranging it in ascending order 52,55,55,x,57,59and 60
Odd no. Mean =n+1/2
7+1/2=4th term =x=56
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