Related Questions

Due to the technical snag in the signal system two trains start approaching each other on the same track from two different stations, 240 km away each other. When the train starts a bird also starts moving to and fro between the two trains at 60 kmph touching each train each time. The bird initially sitting on the top of the engine of one of the trains and it moves so till these trains collide. If these trains collide one and half hour after start, then how many kilometers bird travels till the time of collision of trains?
Two trains cross each other in 23 seconds. Find the length of both the trains combined if the speeds of the trains are 56 kmph and 76 kmph, respectively. The trains were moving in the same direction.
Two trains cross each other in 23 seconds. Find the length of both the trains combined if the speeds of the trains are 56 kmph and 76 kmph, respectively. The trains were moving in the opposite direction.
2 trains cross each other in 78 seconds. The speeds of the trains are 89 kmph and 69 kmph, respectively. Find the combined length of both the trains. The trains are moving in the same direction.
2 trains cross each other in 28 seconds. If the speeds of the trains are 89 kmph and 69 kmph, respectively. Find the combined length of both the trains. The trains are moving in the opposite direction.
Statements : All aeroplanes are trains. Some trains are chairs.

Conclusions :
I. Some aeroplanes are chairs.
II. Some chairs are aeroplanes.
III. Some chairs are trains.
IV. Some trains are aeroplanes.
Statements : Some trains are roads. No road is jungle. All flowers are jungles.

Conclusions:
I. Some trains are flowers.
II. Some trains are jungles.
III. Some flowers are trains.
IV. No road is flower.
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statement : In Bombay, railway trains are indispensable for people in the suburbs to reach their places of work on time.

Assumptions :
I. Railway trains are the only mode of transport available in the suburbs of Bombay.
II. Only railway trains run punctually.
Two trains cross each other at a speed of 50 kmph and 55 kmph, respectively. If the total length of both the trains is 1200m, find the time in which they crossed each other. The trains were moving in the same direction.
Two trains cross each other at a speed of 50 kmph and 55 kmph, respectively. If the total length of both the trains is 1200m, find the time in which they crossed each other. The trains were moving in the opposite direction.