Postal or Sorting Assistants Model Paper 1 With Solutions

Question : 21 of 100

Marks: +1, -0

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

10 sec
12 sec
9 sec
8 sec

Validate

Solution:

(d) Relative speed =

(45 + 54) = 99

km / hr =

{99×5}/18

m/sec
Distance covered in crossing each other

=(108+112)=220

m
Required time

=220/99×18/5=8

sec

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