arithmetic - the average weight of three boys m n and p is 54 13 kg while the average weight of three boys n q and r is 53 kg what is the average weight of m n p q and r - skillgun

Total weight of (M + N + P) = 54 1/3 x 3 kg = 163 kg.
Total weight of (N + Q + R) = (53 x 3) kg = 159 kg.
Adding both, we : M + 2N + P + Q + R = (163 + 159) kg = 322 kg.
So, to find the average weight of M, N, P, Q and R, we ought to know N’s weight, which is not given. So, the data is inadequate.