Question

A train of length 450 m crosses a pole with a speed of 72 km /h . how long will they take , if both sanju and summit work together

Answer 1

Answer:

22 whole to the 1/2

Step-by-step explanation:

Length of the train = 450m

Speed of a train crosses a pole=72 km/hr

In kilometre we have to use this formula=

5/18

72*5/18 = 20m/s

Distance=speed*time

Time=Distance/speed

450/20= 22 whole to the 1/2