Question

The average weight of a group of 8 girls is 50 kg. If 2 girls R and S replace P and Q, the new average weight
becomes 48 kg. The weight of P= Weight of Q and the weight of R= Weight of S. Another girl T, is included in the group
and the new average weight becomes 48 kg. Weight of T= Weight of R. Find the weight of P?​

Answer 1

Answer:

8 x 50 +R+S-P-Q= 48×8 R+S-P-Q=-16

P+Q-R-S= 16 R=S and P=Q

P-R=8 One more person is included and the weight = 48 kg

Let the weight be a = (48 ×8+a)9/9 = 48

a=48 kg= weight of R weight of P= 48+8= 56 kg