A boy walks 800m in 20 minutes. Calculate his average spe...
A boy walks 800m in 20 minutes. Calculate his average speed in km per hour
2.4
4
16
24
Correct answer is A
Averagespeed=DistanceTimetakenDistance=800m=8001000km=0.8kmTimetaken=20minutes=2060hr=13hrAveragespeed=(0.8÷13)km/hr=(0.8×3)km/hr=2.4km/hr
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