Journey takes 5 hours 30 minutes at a speed of 60 km per hour how long will the same journey at speed of 15 metre per second
Answers
Answered by
0
Answer:
it will take 5hours 45min to complete the journey
Step-by-step explanation:
as decrease d the speed by1.444
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Answered by
0
Step-by-step explanation:
journey takes 4 hours 30 minutes
=4
2
1
=
2
9
h at a speed of 60 km/h
If speed is 15 m/sec
Convert m/s into km/h
=15×
5
18
=54 km/h
Let time taken =x h
∴60:54=
2
9
:x
Less speed, more time
∴54:60=
2
9
:x
⇒54×x=60×
2
9
⇒x=
54×2
60×9
⇒x=5
∴ Time taken =5 hours
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