Question

a journey takes 4 hours 30 minutes at a speed of 60km/h.how long will the same journey take place in 15m/sec

Answer 1

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Answer 2

4 hours 30 minutes = 4.5 hours.

Or 4 × 60 + 30 = 270 mins

Speed given

Time given

Convert mins into hours

270/60 = 9/2 hours

60 × 9/2 = 270 km

Now 15 m /sec = 15 × 18/5 = 54km h

Time = distance/ speed

270/54 = 5 hours