Two Trains 105m And 90m Long Run At The Speeds Of 45 Kmph And 72 Kmph

1.	Two Trains 105m And 90m Long Run At The Speeds Of 45 Kmph And 72 Kmph Respectively In Opposite Direction On Parallel Tracks. The Time Which They Take To Cross Each Other Is?
Answer» SUM of the lengths of the trains = (105 + 90)m = 195m Relative speed = (72 +45)KMPH = 117kmph =(117 x 5/18)m/SEC = 585/18 m/sec REQUIRED Time = (195 x 18/585)sec = 6 Sec. Sum of the lengths of the trains = (105 + 90)m = 195m Relative speed = (72 +45)kmph = 117kmph =(117 x 5/18)m/sec = 585/18 m/sec Required Time = (195 x 18/585)sec = 6 Sec.

Two Trains 105m And 90m Long Run At The Speeds Of 45 Kmph And 72 Kmph Respectively In Opposite Direction On Parallel Tracks. The Time Which They Take To Cross Each Other Is?

Answer»

SUM of the lengths of the trains = (105 + 90)m = 195m

Relative speed = (72 +45)KMPH

= 117kmph =(117 x 5/18)m/SEC = 585/18 m/sec

REQUIRED Time = (195 x 18/585)sec = 6 Sec.

Sum of the lengths of the trains = (105 + 90)m = 195m

Relative speed = (72 +45)kmph

= 117kmph =(117 x 5/18)m/sec = 585/18 m/sec

Required Time = (195 x 18/585)sec = 6 Sec.