Question

a train takes 6 hours to complete a journeu at a speed of 72 km/h how long will another traim take to complete the same journey if its speed is 15 m/s​

Answer 1

Given that : A train takes 6 hours to complete a journey at a speed of 72 km/h

Distance = 72×6 = 432 km.

Also, given that : the speed of another train = 15 m/s = 15×18/5 = 54 km/h

And Distance = 432 km.

Time taken by Another train to complete the journey :

$\frac{432}{54} = 8 \: hours$

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Answer 2

Answer: 8 hours

Step-by-step explanation:

distance = speed * time

x = 72* 6

x=432<------Distance

speed = distance / time

time = distance/ speed

time= 432 (distance)/54

time = 8 hours