Math, asked by sakshamgupta2008, 4 months ago

A train passes 210m long bridge in 21s and a signal in 2s find the speed of the train on km/h

Answers

Answered by rkcomp31

0

Answer:

Step-by-step explanation:

here distance=210+210+420 m

t=21 s

speed=d/t=420/210=30 m/s

=30*3600/1000

=108 km/hr

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