If a 100m train crosses a platform of 75m in 7.5 secs, another train of 120m coming opposite, how much time it takes the first train to cross the second one.

Interview Candidate
Jul 4th, 2005
17
2005

Showing Answers 1 - 17 of 17 Answers

ansar

May 26th, 2005

175--->7.5 ''
220--->?
it is 9.4''

prashant

Jul 4th, 2005

its 9.4/2
bcoz 2 trains at same speed
in first case platform was nt moving

Abu Wafi

Aug 28th, 2007

Speed of first train: 75/7.5 = 10 m/secs
Length of another train tobe pass by train one: (120-100) + 120 = 140m
So, the time takes: 140 / 10 = 14 secs.

NiranjanH.Manneri
Profile Answers by NiranjanH.Manneri

Jan 25th, 2008

formula for crossing time=(x+y)/(u+v)
x=100,y=120,u=75/7.5=10m/s
v=(120*7.5)/100=8.33m/s
therefore time=12sec

amalavarshini
Profile Answers by amalavarshini

Jun 14th, 2008

plz give me a confirm answer

kinsukmaiti
Profile Answers by kinsukmaiti

Jun 24th, 2008

First answer is correct..
175m in 7.5 secs
220m-- ? secs
9.42Seconds

vasudeo007
Profile Answers by vasudeo007

Jul 9th, 2008

Frankly, no answer is possible. Because the data given is incomplete. It does not mention what speed the other train is coming.

Unless and until that data is received we cannot go ahead with solving.

Regards,

Vasudeo