The average weight of six members of a family is 30 kg. If the head of the family is not considered,…
Six members with an average of 30 kg weigh 180 kg in total. Without the head the remaining five average 25 kg, that is 125 kg, so the head weighs 180 - 125 = 55 kg.
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The average weight of six members of a family is 30 kg. If the head of the family is not considered, the average weight of the rest of the family members is 5 kg less than the earlier average. Find the weight of the head of the family.
Answer and explanation
Correct answer A
Six members with an average of 30 kg weigh 180 kg in total. Without the head the remaining five average 25 kg, that is 125 kg, so the head weighs 180 - 125 = 55 kg.
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