SOLUTION: how many miles per hour does a car travel if it makes a 40 mile trip in 30 minutes

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Question 573771: how many miles per hour does a car travel if it makes a 40 mile trip in 30 minutes
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!
Distance(d) equals Rate(r) times Time(t) or d=rt; r=d/t and t=d/r
d= 40 mi
t=30 min=1/2 hour
so, r=d/t=40 mi/(1/2hr)=80 mph
Hope this helps---ptaylor