A train having a length of 500 m passes through a tunnel of 1000 m in 1 minute. What is the speed of the train in Km/hr?
A75 Km/hr
B90 Km/hr
C87 Km/hr
D96 Km/hr
Answer:
B. 90 Km/hr
Read Explanation:
Let the speed of the train be x m/s.
length of the train = 500 m
Length of the tunnel = 1000 m
Time taken to pass the tunnel = 1 minute = 60 seconds
x = (500 + 1000) ÷ 60
x = 25 m/s
Speed of the train in km/hr =25x18/5= 90 km/hr.