The average weight of hundred people in a group is 46 kg while that of men and women seprately in 50 kg and 40 kg respectively find the number of men in the group
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Step-by-step explanation:
let the number of men in the group be x.
number of women equal to 100-x
the average weight of hundred people equal to 46 kg.
total weight of 100 people equal to 46× 100 = 4600kg.
average weight of men = 50kg.
total weight of men = 50x kg.
average weight of women = 40kg
total weight of women = 40 ( 100-x )
= 4000 - 40x.
= 4000 - 40x + 50x = 4600
= 10x = 600
= x = 600/ 10
= 60 men.
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