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Q1
:
A 300 metre long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?
A
650 m
B
320 m
C
Data inadequate
D
350 m
Solution
ANS:
B
- 350 m
Speed =
300
m/sec =
50
m/sec.
18
3
Let the length of the platform be
x
metres.
Then,
x
+ 300
=
50
39
3
3(
x
+ 300) = 1950
x
= 350 m.
Share :
x
