Three persons walk some distance x along a street at the speed of 2 km, 3km, 4 km per hour. Their average speed in km/h is
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Explanation:
the avg speed = 2km/t1 + t2
As time=distance/velocity
t1=1/6
t2=1/4
Avg speed= 2/ 1/6+1/4
Avg speed= 2/ 10/24
Avg speed= 48/10
Avg speed =4.8 km/hr
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Answer:
Three persons walk some distance x along a street at the speed of 2 km, 3km, 4 km per hour. Their average speed in km/h is
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