annabella is taking a train to see her boyfriend on Valentine's Day. the train is 100 M long and takes 30 seconds to cross of 400m Bridge. what speed is train going at
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total distance =100+400=500
time=30
speed=500÷30
=16.6
time=30
speed=500÷30
=16.6
ravirv:
what will be the answer in kilometre per hour
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