Question 704267
length of train x m
length of tunnel = 750m

total distance traveled to exit from tunnel = (x+750)

speed = 50 km/h

time taken = 1.5 m

50 km/h = 833.333333 meters / minute

speed = distance / time

833.33 = (x+750)/1.5

833.33*1.5 = x+750

(833.33*1.5)-750 = x

499.99

= 500 m