A toll tunnel has decided to experiment with the use of a debit card for the collection of tolls. Initially, only one lane will be used. Cars are estimated to arrive at this experimental lane at the rate of 250 per hour. It will take exactly 12.0 seconds to verify the debit card. a. How much time would you expect a customer to wait in line, pay with a debit card, and leave? Note: Round your intermediate calculations to 3 decimal places and final answer to 1 decimal place. b. How many cars would you expect to see in the system? Note: Round your intermediate calculations to 3 decimal places and final answer to 2 decimal places