A 200 m long train crosses 400
bridge in 30 seconds. Find the
speed of the train
(a) 54 km/hr (b) 70 km/hr
(c) 144 km/hr (d) 72 km/hr
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72 km/p
Step-by-step explanation:
first we will take the total distance
200+400 = 600
therefore
speed= distance÷time
600÷30
= 20 m/s
convert 20m/s to km/p
72 kmnation:
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