The following question has three statements. Study the question and the statements to decide which of the statement(s) is/are necessary to answer the question. A train starts from point A towards point B, but after ‘n’ hours, its speed becomes 2/3rd of the normal speed due to some fault. Find the value of n. Statement I: The fault occurred at a distance of 800 km from the destination Statement II: Had the fault occurred 200 km further, the train would have got late by 30 min Statement III: The train got late by 40 min Correct Answer None of the above From Statement I: The fault occurred at a distance of 800 km from the destination. Nothing can be interpreted from this. Since, we neither have the distance between A and B nor the total time, we can’t find the required answer From Statement II and III: Let the speed of the train is x km/hr According to statement, ⇒ {200/(2x/3)} - (200/x) = (40 - 30)/60 ⇒ 100/x = 1/6 ⇒ x = 600 km/hr ⇒ Speed of the train = 600 km/hr ∴ All the statements together are not sufficient to answer the question