Trains Boats and Streams Practice Test 1 with solutions

Question : 23 of 40

Marks: +1, -0

Two trains 108 m and 112 m in length are moving towards each other on the parallel lines at a speed of 45 km/hr and 54 km/hr respectively. To cross each other after they meet, it will take:

12 seconds
9 seconds
8 seconds
10 seconds

Validate

Solution:

The length of Trains A and B is 108 m and 112 m respectively.
Speed of Trains A and B is 45 kmph and 54 kmph respectively
Time =

({112+108}/{{45×5}/{18}+{54×5}/{18}})

{220}/{{25}/2+15}

{220×2}/{25+30}

{440}/{55}

= 8 second

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