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
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The mean weight of 7 boys = 56 Kg
The weight of 7 boys
=52,57,55,60,59,55,x
(52+57+55+60+59+55+x)/7 = 56 kg
(338+x )/7 = 56 kg
338+x = 56 kg × 7
338+x = 392 kg
x = 392-338
x = 54
The mean weight of 7 boys = 56 Kg
The weight of 7 boys
=52,57,55,60,59,55,x
(52+57+55+60+59+55+x)/7 = 56 kg
(338+x )/7 = 56 kg
338+x = 56 kg × 7
338+x = 392 kg
x = 392-338
x = 54
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