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Q1
:
A train moves past a telegraph post and a bridge 264 m long in 8 seconds and 20 seconds respectively. What is the speed of the train?
A
69.5 km/hr
B
70 km/hr
C
79 km/hr
D
79.2 km/hr
Solution
ANS:
A
- 69.5 km/hr
Then,
x
= 8
x
= 8
y
y
Now,
x
+ 264
=
y
20
8
y
+ 264 = 20
y
y
= 22.
Speed = 22 m/sec =
22 x
18
km/hr = 79.2 km/hr.
5
Share :
x = 8y
Speed = 22 m/sec =
