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A car covers 30 km in 2 hrs and next 40 km at 20 km / h. Find its average speed in the entire journey. |
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Answer» 26.67 km/hStep-by-step explanation:The total TIME for the journey is GIVEN as,t=d1÷v1+d2÷v2=30÷40+30÷20=2.25hourThe average SPEED is given as,average VELOCITY =d1+d2÷t=30+30÷2.25=26.67km/hThus, the average speed of the car is 26.67km/h. |
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