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Answer» Answer: 150 kg ; sister. Step-by-step explanation: Total weight of all family members is the sum of weights of FATHER, mother, brother, REENU and sister. Total weight = weight of father + weight of mother + weight of brother + weight of Reenu + weight of sister. ⇒ Total weight = 53 kg + 47 kg + 23 kg + 18 kg + 9 kg ⇒ Total weight = 150 kg Weight of Reenu is 18 kg. HALF of weight of Reenu is ( 18 kg / 2 ) or 9 kg. In the family, weight of sister is 9 kg. Therefore, sister's weight is half of the Reenu's weight.
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