a car travels first 30 km with a uniform speed of 60 km per hour and then next 30 km with a uniform speed of 40 km per hour calculate the total time of Germany and the average speed of the car
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we know that :
av time =av. distance /av. speed
av. time=30+30/60+40=60/100=0.6hour=0.6×60 minutes=36 minutes
av time =av. distance /av. speed
av. time=30+30/60+40=60/100=0.6hour=0.6×60 minutes=36 minutes
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