give the answers of the picture
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ans1 distance =speed x time
distance=30 ×30/60(covert 30min in hour)
distance=15km
distance travelled by car in first journey is 15 km
no distance travelled by car in returning journey=d=s×t
distance =40×1
distance=40
now total distance =40+15=55
ans2 the total time will 60min+30 min that is 90 min
average speed =total distance ÷total time
uav=55÷1.5 hours
uav=36.66
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