A car covers 30 km and 30 minutes and next 30 km 40 minutes calculate the average speed for the entire journey
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The average speed is 51.4kmph
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average speed = total distance/ total time30 min= 30/60 hr = 1/2 hr40 min= 40/60 hr = 2/3 hrtotal time= 1/2+2/3= 7/6 hrtotal distance= 30 km+ 30 km= 60 kmaverage speed= 60/7/6= 60*6/7= 360/7= 51.42 km/hr
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