Brenda's train leaves at 7:30 a.m. she needs to arrive 10 minutes early to but her ticket. It takes her 20 minutes to get to the train station. At what time should Brenda leave her house?
She needs to arrive 10 minutes before the train departs, at 7:30 am, so she 30minutes- 10minutes= 20 minutes She must arrive by 7:20 am She also has a 20 minute drive 20minutes-20minutes=0 minutes She must leave by 7:00 am to make it in time