One adult and 10 children are in an elevator. If the adult's weight is 4 times the average (arithmetic mean) weight of the children, then the adult's weight is what fraction of the total weight of the 11 people in the elevator? any solutions thx
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1 Adult +10 Children
1 Adult = 4 Children (for weight)
substitute and you get 4 Children +10 Children = 14 Children (in weight)
Adults fraction is 1 Adult = 4 Children
4 children /14 children = 4/14 = 2/7
1 Adult = 4 Children (for weight)
substitute and you get 4 Children +10 Children = 14 Children (in weight)
Adults fraction is 1 Adult = 4 Children
4 children /14 children = 4/14 = 2/7