Bissoy.com
Doctors Medicines MCQs Q&A

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?

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? Correct Answer 90 km

Time taken to collide the trains,= one and half hour = $$\frac{3}{2}$$ h.So, in $$\frac{3}{2}$$ h bird travels,= $$\frac{{3 \times 60}}{2}$$= 90 km.

Related Questions

Two trains start simultaneously from two stations Howrah and Delhi, respectively towards each other on the same track. The distance between the two stations is 560 km and the speeds of trains are 30 kmph and 40 kmph.Simultaneously with the trains, a sparrow sitting on the top of one of the train starts towards the other and reverses its direction on reaching the other train and so on. If the speed of sparrow is 80 kmph then the distance that the sparrow lies before being crushed between the train is :
How does a host on an Ethernet LAN know when to transmit after a collision has occurred?
1. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
2. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
3. You can improve the CSMA/CD network by adding more hubs.
4. After a collision, the station that detected the collision has first priority to resend the lost data.
5. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.
10 people - A, B, C, D, E, P, Q, R, S and T are sitting opposite to each other in two different rows. There are five people in each row and facing towards each other. Q is not facing north is sitting opposite to the one who is sitting second to the right of D. S is an immediate neighbour of A but not of Q. P is not sitting at any of the extreme ends. R is facing north and is sitting at one of the extreme ends but not opposite to S. S is sitting in the opposite row of B but is not sitting opposite to D. Only one person is sitting between B and D. D and Q are not sitting at any of the extreme ends. C is sitting second to the right of E and opposite to the one who is an immediate neighbour of D. Who among the following pair is not sitting opposite to each other?
The question below is followed by two statements I and II. You have to determine whether the data given is sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. Train A departs at 9 : 20 am and train B departs at 10 : 50 am and they travel towards each other. After how much amount of time will the trains meet? I) Train A travels with a speed of 10 kmph and the difference between the speed of two trains is 6 kmph and both the trains are 160 km apart. II) Train B travels at a speed greater than Train A which travels with 10 kmph by 6kmph separated by a distance of 160 km.
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.
Eight people – S, T, U, V, W, X, Y and Z are sitting in two rows. Four people are sitting in each row at equal distances and facing towards each other. T is not facing north but sitting second to the right of V. X is sitting opposite to the one who is sitting immediate right to T. U and W are sitting next to each other but none of them is sitting at extreme ends. X and S are not sitting in a same row nor opposite to each other. Only one person is sitting to the right of U who is not Z. Who among the following is not sitting opposite to each other?
P, Q, R, S, T, W, Y and Z are sitting around a circular table from equal distances to each other and facing towards centre. They all like different colours viz., Red, Blue, Green, Black, White, Pink, Yellow and Brown (not necessarily in the same order). P likes yellow and sitting third to the left of W. Two persons are sitting between W and S. The one who likes pink is not sitting with P nor with W. Only one person is sitting between T and Z but not P and S. Y likes black but he is not sitting with S. R does not like pink nor white. T is sitting to the immediate left one who likes green. Z does not like brown nor he is sitting to the immediate right one who likes black. The one who likes white is not sitting with W. R neither likes brown nor Red. Which of the following combination is true as per the given information?
A person covers the first 176 kilometers at a speed of 16 kilometers/hour and the next 64 kilometers at a speed of 32 kilometers/hour. What would be the approximate average speed for the first 240 kilometers of the journey? A. 13 Km/h B. 27 Km/h C. 18.5 Km/h D. 21 Km/h
Eight people – A, B, C, D, P, Q, R and S are sitting in two rows (4 people in each row) at equal distance facing towards each other. All of them like different movies viz., Pink, Baaghi, Dangal, Dabangg, Race, PK, Dhoom and Lagaan (not necessarily in the same order). P likes dhoom and is sitting immediate left of B but both of them are not sitting at any extreme ends. The one who likes PK, is facing north and sitting immediate left to the person who is sitting opposite to A. Q likes Race, is sitting with A but not at the extreme end. The one who likes Lagaan is sitting opposite to the person who likes Pink. R and D both are sitting in the same row but R neither likes PK nor Lagaan. S is sitting with the one who likes Dangal. A does not like Dabangg. Which of the following movie does A like?
The question below is followed by three statements I, II, and III. You have to determine whether the data given is sufficient for answering the question. You should use the data and your knowledge of mathematics to choose the best possible answer. A car travels from city P to city Q in T hours with a speed of v km per hour. Distance between cities P and Q is D kilometers. If it increases its speed by 5 kmph it saves some time. Find the actual speed of the car. Statement I: If the car travels from P to Q with its actual speed of v kmph and come back with the speed of v + 5 kmph in 2T – 0.6 hrs Statement II: A bus start form Q at the same time when the car starts from P and the speed of the bus is 50% more than the speed of the car and the bus meets car after covering 60% of the distance Statement III: Distance between PQ is given by D2 – 25D + 200 = 0