To answer the question we require to know the value of 2 parameters
1. Speed of the train
2. Rate of consumption of the coal.
From Option(1) we can only get rate of consumption of the coal. Speed of the train is unknown. Hence INSUFFICIENT
From Option(2) We only have the speed of the train. rate of consumption of coal is Unkown. Again INSUFFICIENT
Combining (1) and(2) we clearly get both the parameters
Hope This Helps
1. Speed of the train
2. Rate of consumption of the coal.
From Option(1) we can only get rate of consumption of the coal. Speed of the train is unknown. Hence INSUFFICIENT
From Option(2) We only have the speed of the train. rate of consumption of coal is Unkown. Again INSUFFICIENT
Combining (1) and(2) we clearly get both the parameters
Hope This Helps
