what is the speed of a 75m long train which passes a 150m long platform in 10 seconds?
A.60km/hr
B.68 km/hr
C:76km/hr
D:81km/hr
Answers
Answered by
11
Answer: D. 81 km/hr
Distance travelled by the train in 10 sec = 150 + 75 = 225 m
Speed = distance / time
= (225 / 10)m/s
To convert m/s into km/h, multiply with 18/5.
= (225/10) × (18/5)
= 22.5 × 3.6
= 81 km/h
Answered by
1
@Meghanath777 why did we added 150 and 75 ??
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