Question

A journey takes 4 hours and 30 mins at a speed of 60km/hr. How long will the same journey take at a speed of 15m/sec??

Answer 1

Answer:

5 hours

Step-by-step explanation:

Time = 4 hour 30 minutes

so, t = 4.5 h

speed = 60 kmph

As Distance = speed x time

So, Distance travelled in the journey

= 60 x 4.5 km

= 270 kmph

Now distance = 270 km

New speed = 15 m/s

New speed = 15 m/s = 15x (3600/1000) kmph

New speed = 15 m/s = 15x (3600/1000) kmph= 54 kmph

So, time = distance/ speed

so, time = 270/54 hr

so, time = 5 hr

Hence, it will take 5 hours at a speed of 15m/sec.