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?
| Question | 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? | |
| Type | multiple_choice | |
| Option | 66.4 kg | incorrect |
| Option | 63.2 kg | incorrect |
| Option | 58.8 kg | incorrect |
| Option | Data Inadequate | correct |
| Solution | Total weight of (P + Q + R) = {54*3} kg = 162 kg Total weight of(Q + S + T) = (60 *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. | |