Question

A train takes 6 hous to complete a journey at a speed of 72 km/h. How long will another
train take to complete the same journey if its speed is 15 m/s?
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Answer 1

Answer:

Speed of train A= 72kmph

Time taken by trainA= 6hrs

Distance=speedxtime

72x6

=432kmn

Change 15mps into kmph

=15x18/5

-54kmph(speed of train B)

Time distance /speed

Time by train B=432/54

=8 hours

Step-by-step explanation:

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Answer 2

Answer:

the 1 st train complete the journey in 6 hours at a speed of 72km/hour

the train covered the distance in 6 hours is

6*72 km=432km=432000m

the another train covered the distance 432 km at speed 15 m/s

time = distance/speed

=432000/15 sec

=28800 sec

=28800÷60 minute

=480minute

=480÷60 hour

=8 hours