Given:
Length of each train = 320 meters, Time = 18 seconds
Formula Used:
Relative Speed = Total Distance / Time
Solution:
Let the speed of each train be x m/sec
Then relative speed of the two trains = 2x m/sec
Total distance covered = 320 + 320 = 640m
Total time = 18sec
So 2x = 640/18
x =
in km/h
= = 64 km/hr.
∴ Speed of each train = 64 km/hr.
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60 Mins English English80 Questions160 Marks60 Mins English English20 Questions40 Marks25 Mins EnglishWhat time it will be 25200 seconds after 1pm?
Sudha and Kavitha start moving on a bicycle towards each other at 5 am with the speeds of 14 kmph and 16 kmph respectively. They were 45 km apart at the starting point for both. At what time would they meet?
A man walks to a viewpoint and returns to the starting point by his car maintaining a constant speed and thus, takes a total time of 4 hours 45 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways with the same walking speed?
A 145 m long train crosses a man walking at a speed of 9.5 km/h in the opposite direction in 30 seconds. What is the speed (in km/h) of the train ?
A bus cover 320 km distance in 5 hours, and speed of a car 3/8 of the speed of bus. Find the ratio of distance cover by bus in 6 hours to distance cover by car in five hours?
Two cars A and B started from point X & Y respectively, and the distance between these two points is 660 km. Both cars started at 10 AM and meet at 3 PM. If speed of car A is 12 km/hr more than that of B, then find the speed of car A (in km/hr)?
From a taxi stand, two cabs start at a speed of 74 km/hr at an interval of 28 minutes, both cabs travelling in the same direction. A man coming in the opposite direction towards the taxi stand meets the cabs at an interval of 10 minutes. Find the speed (in km/hr) of the man.
On a circular path of 2742 m, Riya and Trisha start walking from the same point but in opposite directions at the speed of 4.6 m/s and X m/s, respectively. They will meet for the first time after 457 seconds. Find the value of X.
How long does it take for a 200 m long train, moving at a speed of 72 km/h, to completely cross another 300 m long train moving at a speed of 36 km/h in the same direction?
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What time it will be 25200 seconds after 1pm?
Sudha and Kavitha start moving on a bicycle towards each other at 5 am with the speeds of 14 kmph and 16 kmph respectively. They were 45 km apart at the starting point for both. At what time would they meet?
A man walks to a viewpoint and returns to the starting point by his car maintaining a constant speed and thus, takes a total time of 4 hours 45 minutes. He would have gained 2 hours by driving both ways. How long would it have taken for him to walk both ways with the same walking speed?
A 145 m long train crosses a man walking at a speed of 9.5 km/h in the opposite direction in 30 seconds. What is the speed (in km/h) of the train ?
A bus cover 320 km distance in 5 hours, and speed of a car 3/8 of the speed of bus. Find the ratio of distance cover by bus in 6 hours to distance cover by car in five hours?
Two cars A and B started from point X & Y respectively, and the distance between these two points is 660 km. Both cars started at 10 AM and meet at 3 PM. If speed of car A is 12 km/hr more than that of B, then find the speed of car A (in km/hr)?
From a taxi stand, two cabs start at a speed of 74 km/hr at an interval of 28 minutes, both cabs travelling in the same direction. A man coming in the opposite direction towards the taxi stand meets the cabs at an interval of 10 minutes. Find the speed (in km/hr) of the man.
On a circular path of 2742 m, Riya and Trisha start walking from the same point but in opposite directions at the speed of 4.6 m/s and X m/s, respectively. They will meet for the first time after 457 seconds. Find the value of X.
How long does it take for a 200 m long train, moving at a speed of 72 km/h, to completely cross another 300 m long train moving at a speed of 36 km/h in the same direction?
