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There is only one rail track between stations A and B on a railway line. One hour after the northbound superfast train N leaves station A for station B, the southbound passenger train S reaches station A from station B. The speed of superfast train is twice that of express train E, while the speed of passenger train S is half of that of train E. On some one day train N leaves from station A to station B 20 minutes late than its usual schedule. Both Train N and Train S have increased their speed to maintain the schedule as per the table. If the superfast train doubles its speed, then what should be the ratio (approximately) of the speed of the passenger train to the speed of the superfast train so that the passenger train reaches the station on that day at the exact scheduled time.
After passing an automatic stop signal at ON. If the Driver finds a train or obstruction he must stop his train at ________ away from the train or obstruction.
In each question below is given a statement numbered I, II and III. An assumption is something supposed or taken for granted. You have to consider the following assumption and decide which of the assumption is implicit in the statement. Statement: An alert motorman averted a major tragedy today when he applied emergency brakes right on time, stopping his train just a few meters away from the spot where part of a road overbridge had collapsed in suburban Andheri. The motorman (driver), Chandrashekhar B Sawant, who was steering the Churchgate-bound 7.06 am suburban train from Borivli, saw a portion of the road overbridge falling as he was nearing the Andheri station. Assumptions: I. The road overbridge, built-in 1971, collapsed near the eastern side of the Andheri railway station and part of it fell on the rail tracks.  II. The driver immediately applied emergency brakes and the train stopped a few meters from the spot where the bridge collapsed. III. The collapse was accompanied by a big thud sound of the falling debris.
The speed of car is S km/hr running on the road besides a railway track. If the speed of the train is (S + 144) km/hr and car is D meter distance ahead of the engine of train. The train will pass the car in 21 seconds. If the speed of the car is 60 km/hr and the speed of the train is (S + 110) km/hr. The car is (D – 240) meter distance ahead of the engine of the train and the train will pass the car in 20 seconds. The length of the train is (D + 160) m. Then, what is the value of S?
Two trains whose lengths are 100 meters and 200 meters respectively run from A to B at 10 AM and 12 AM respectively and their speed is 18 km/h and 36 km/h respectively. Ram travels in a train of short length. If C is a station between A and B, here Ram's friend board in the high speed train and both meet at that place, where the high speed train crosses the low speed train. If the short length train reached point C at 12 o'clock, then find when will the two friends meet?
A train is travelling at 100 km per hour (Kmh) overtakes a motorbike travelling at a speed of 65 kmh in 40 seconds . What is the length of the train in meters?
The Ghaziabad - Hapur - Meerut EMU and the Meerut - Hapur - Ghaziabad EMU start at the same time from Ghaziabad and Meerut and proceed towards each other at 16 km/hr and 21 km/hr respectively. When they meet, it is found that one train has traveled 60 km more than the other . The distance between two stations is?
The following question has two statements. Study the question and the statements and decide which of the statement(s) is necessary to answer the question. Train A leaves New York for Boston at 2 PM and travels at the constant speed of 100 mph. An hour later, it passes Train B, which is making the trip from Boston to New York at a constant speed. If Train B left Boston at 2:50 PM and if the combined travel time of the two trains is 2 hours, what time did Train B arrive in New York? I) Train B arrived in New York before Train A arrived in Boston. II) The distance between New York and Boston is greater than 140 miles.
Guard shall use ________ bell code to warn the motorman, if motorman violated the speed.
What is the distance covered by boat N upstream in 5 hours? Which of the following option is sufficient alone to find the answer? A) Boat M is travelling downstream with 20% more downstream speed of boat N. Speed of boat M in still water is 10% more than the speed of boat N in still water. B) Boat M and Boat N are travelling downstream with speed 33 km/hr and 40 km/hr respectively and speed of boat M is still water is 2 times the speed of stream. C) Speed of boat M in still water is 6 km/hr less then speed of boat N in still water and speed of stream is 10 km/hr. D) Speed of stream is ½ times the speed of boat N in still water and downstream speed of boat M is 44 km/hr. E) Speed of stream is 10 km/hr and ratio of upstream speed of boat M and boat N is 3 : 2 respectively.