Final answer:
It takes 25 minutes for the parking lot to completely clear.
Step-by-step explanation:
To find the total minutes it takes for the parking lot to completely clear, we need to determine the time it takes for all the cars to leave. The rate at which the cars leave is given as 34 cars per minute after 25 minutes. So, the number of cars leaving after 25 minutes is 25 * 34 = 850 cars. To find the total minutes it takes for all the cars to leave, we divide the total number of cars by the rate at which they leave. Thus, it takes 850 / 34 = 25 minutes for the parking lot to completely clear.