Two trains of length 125 m each are coming from opposite directions. If the speeds of 2 trains are 18 m/s and 22 m/s, then find the time in which 2 trains will cross each other.
Two trains of length 125 m each are coming from opposite directions. If the speeds of 2 trains are 18 m/s and 22 m/s, then find the time in which 2 trains will cross each other.
A25/4 secs
B5 secs
C48 secs
D7 secs
All DiscussionsClick here to write answer
correct answer is: 25/4 secs
Explanation: The two trains are moving towards each other, so their relative speed is the sum of their individual speeds: 18 m/s + 22 m/s = 40 m/s. The total distance they need to cover to cross each other is the sum of their lengths: 125 m + 125 m = 250 m. Using the formula time = distance / speed, the time taken for the trains to cross each other is 250 m / 40 m/s = 6.25 seconds, which is equivalent to 25/4 seconds.
- OPTION a: Correct, as calculated above.
- OPTION b: Incorrect, 5 seconds is too short.
- OPTION c: Incorrect, 48 seconds is too long.
- OPTION d: Incorrect, 7 seconds is also too long.
Post your answers here:
Rich Text Editor, message-ans
Editor toolbars
Press ALT 0 for help
◢Elements path Post
Related Posts:
The ratio of the number of students studying in school A, B and C is 5 : 6 : 8. lf the number of students in each of the schools is increased by 30%, 25% and 25% respectively, what will be the new ratio of the students in schools A, B and C?- If A : B = 1 : 3, B : C = 5 : 7, C : D = 9 : 7, then A : B : C : D = ?
- Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is:
- The cost of making an article is divided between materials. labour and overheads in the ratio of 3 : 4 : 1. If the material costs Rs.234, then the labour cost is:
- The average score of a class of boys and girls in an examination is A. The ratio of boys and girls in the class is 3 : 1. If the average score of the boys is A + 1, the average score of the girls is-
