The ratio of length of two trains is 6 : 5 and the ratio of their speed is 3 : 2 The ratio of time taken by them to cross a pole is :
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 4 : 5
Time = Distance/Speed
Let length of two trains be 6x and 5x and their speed be 3y and 2y
The ratio of time taken by two trains to cross a pole is,
6x/3y : 5x/2y = 12 : 15 = 4 : 5