the mean of a group of 7 boys is 56 kg the individual weight ( in kg) of - Maths - Fractions and Decimals

Question

the mean of a group of 7 boys is 56 kg the individual weight ( in
kg) of six of them are 52,57,55,60,59,55 find the weight of seventh
boy ?????

Priyanka Kedia · Accepted Answer

Let the weight of the 7th boy = x
Mean weight of seven boys = sum of weights of all boys/ total
number of boys
56 kg = ( 52+57+55+60+59+55+x)/
7
56×7 = 338+ x
392-338= x
x= 54 kg
Therefore weight of 7th boy is 54 kg

the mean of a group of 7 boys is 56 kg . the individual weight ( in kg) of six of them are 52,57,55,60,59,55. find the weight of seventh boy ?????