A car travels first 30 km with a uniform speed of 60 km/h and then next 30 km with a uniform speed of 40 km/h. Calculate [3] (i) The total time of journey
Answers
Answered by
0
Answer:
total time=4500 seconds
Answered by
1
Answer:
75 minuutes
Explanation:
time required to complete first 30 km=30/60=0.5 hours=30 minutes
time required to complete next 30 km=30/40=0.75 hours=45 minutes
total time=30+45=75 minutes
OR
since the car travelled same distance in both halves, average velocity=(2*60*40)/(60+40)=48km/h
total distance=60 km
total time=60/48=1.25 hours=75 minutes
Similar questions