Question

A train whose length is 120 m, crosses
a bridge in 12 s at a speed of 60 km/hr.
What is the length of the bridge?
(a) 75 m . (b) 80 m
(C) 85 m (d) 90 m​

Answer 1

Step-by-step explanation:

speed= 60000/60×60

=100/6 m/s

distance=speed × time

120+X= (100/6)× 12

120+X= 200

X=80 mtr

Answer 2

Answer:

• sp=60000/60*60=100/6m/sec
• D=sp×t
• 120+x=100/6*12
• 120+x=200
• X=80 meter