Problems on Trains - Data Intensity 1 Questions and Answers Discussion Page.

8.	A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?
	A.	40 sec
	B.	42 sec
	C.	45 sec
	D.	48 sec

Answer: Option A

Explanation:

Formula for converting from km/hr to m/s: X km/hr = X x 5 m/s.

18

Therefore, Speed = 45 x 5 m/sec = 25 m/sec.

18 2

Total distance to be covered = (360 + 140) m = 500 m.

Formula for finding Time =		Distance
		Speed

Required time =		500 x 2	sec	= 40 sec.
		25

Tutorial Link:

Published by:Michael Daani

PakMCQs.net

Computer Science Civil Engineering

Networking Electronics Database

Model Papers FPSC Papers