Question 1152826
Maria needs to be at the airport terminal at 18:45. It will take 
2 3/4 hours to drive to the airport from her home, and a further 40 minutes to park and get to the terminal. 
What is the latest time she should leave home? 
Give your answer as a time in the 24-hour clock
======================
18:45 is not a 24 hour clock time
It's 1845.