How far can a car going 45mph travel in 40 min Please show y

How far can a car going 45mph travel in 40 min. Please show your. My book says 30 miles but I can\'t figure out how they did it. Is it d=r/t Please help

Solution

The formula that relates distance, time, and rate is d = rt, not d = r/t.
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Your problem:
rate = 45 mph ; time = (40/60) = (2/3) hr.
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Equation:
Since d = rt you get:
distance = 45*(2/3) miles
distance = 15*2 miles
distance = 30 miles