I think I can do it once I get an equation, but I'm having trouble coming up with an equation.
A car traveling at 45 miles per hour is brought to a stop, at constant deceleration, 132 feet from where the brakes are applied.
How far has the car moved when its speed has been reduced to 30 miles per hour?
Problem with that solution is not only the answer but the fact that 1/1800 hours is not the time it takes to go from 45 to 0 mph. That is the time it takes to go 132 feet at 45 mph.
The nature of this problem sounds a lot easier than it is. You may have to use proportions: