Q54
A train passes by a lamp post at platform in 7 sec. and passes by the platform completely in 28 sec. If the length of the platform is 390m, then length of the train (in meters) is?
A.
120 m
B.
130 m
AnswerC.
140 m
D.
150 m
Answer: Option B
Solution
Answer: Option B
Solution:
Length of train× (Time taken to cross a lamp post)