The average weight of three boys P, Q and R is 54 kg, while the average weight of three boys Q, S and T is 60 kg. What is the average weight of P, Q, R, S and T?
66.4 kg
63.2 kg
58.8 kg
Data Inadequate
Explanation:
Total weight of (P + Q + R) = {54 $\times$ 3} kg = 162 kg
Total weight of (Q + S + T) = (60 $\times$ 3) kg = 180 kg
Adding both, we get: P + 2Q + S + R + T = (162 + 180) kg = 342 kg
So, to find the average weight of P, Q, R, S & T, we ought to know Q`s weight, which is not given.
The data is inadequate.