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111
175 meter
By using formula ie. time =total length/relative speed
Where Relative speed = speed of faster train – speed of slower train
60=125+y/5
Then after calculation we get the value pf Y ie: length of slower train =300-125 =175 meter
Ans. 175
Relative speed in m/s=40-22=18X5/18=5m/s
Total distance=125+x m
T=1min=60 s
D=sXt
125+x=5X60
x=175