A lorry

A lorry covered 108km in 1hr 30min. What is the speed in km/h?

Correct answer:

v =  72 km/h

Step-by-step explanation:

s=108 km t=1:30=1 hr 30 min =1+6030=1.5 hr=1.5  v=s/t=108/1.5=72 km/h



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