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A train 800- meter long is running with a speed of 78 KM/h. It crosses tunnel in 1 minute. What is the length of tunnel?
- 650 m
- 555 m
- 500 m
- 458 m
speed of train in minutes: 78/60= 1.3 km =1300 meter per minute
In one minute its cover 1300 meter means
800+500=1300 in which 800 is train length and 500 tunnel.