A 725 m long train passes a tunnel 235 m long in 48 second. Find the speed of the train.

Options
a) 42 km/h
b) 72 km/h
c) 36 km/h
d) 100 km/h

Solutions

As per solution
D = 725 + 235 m
D = 960
T = 48 sec.
S = ?
S =
S =
S = 20 m/sec.
S =
S = 72 km/h

Ans: b) 72 km/h