Constant speed

At a constant speed, a train travels 45 miles in 60 minutes. At this rate, how far does the train travel in 12 minutes?

Correct answer:

s2 =  9 mi

Step-by-step explanation:

s1=45 mi t1=60 min t2=12 min  s2=s1 t1t2=45 6012=6045 12=60540=9 mi

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