Question

the average weight of P,Q and R is 45 kg.if the average weight of P and Q be 36.5 kg and that of Q and R be 52 kg, then what is the weight(in kgs)of Q?

Answer 1

Average weight of P,Q,R=45kg
So,the total weight =45*3=135kg
Average weight of P&Q =36.5kg
So,sum of weight of P&Q =36.5*2=73kg
weight of R =(135-73)kg=62kg
Sum of weights of Q&R=52*2=104kg
weight of Q=(104-62)kg=42kg
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