Question

a train is moving at the speed of hundred kilometre per hour it takes 18 minutes to reach a station what should be its speed if the train wants to reach the station in 15 minutes​

Answer 1

Answer:

120km/hr

Step-by-step explanation:

train speed=100km/hr

time taken =18min=18/60hrs

distance=100×18/60=30km

so new speed=30/(15÷60)

=30×60/15

=120km/hr.

Answer 2

Answer:

let the new speed be x.

since,

distance = speed *time

d=100*18/60

= 100*0.3=30km

there the new speed (x) =

speed

=d/t

=30/0.25 (because 15/60=0.25)

=120

therefore the new speed should 120km/hr