Amy is catching a flight for London at 12:00 noon. Prior to leaving for the airport, she needs
to allow 30 minutes for a shower and 30 minutes to finish packing last minute items. She also
needs to give herself 1 hour to drive to the airport. If she needs to arrive for her international
flight two hours before departure, then she needs to set her alarm to wake up by what time in
order to be on schedule?
Program: Pre-Algebr
12:00 - (0.5 + 0.5 + 1 + 2) = ?
To determine the time that Amy needs to set her alarm, let's work backwards from the time she needs to arrive at the airport.
Amy needs to arrive at the airport two hours before her flight, which is scheduled for 12:00 noon. Therefore, she needs to be at the airport by 12:00 - 2:00 = 10:00 AM.
Before driving to the airport, Amy needs to allow herself 1 hour. So, she needs to leave her home by 10:00 AM + 1 hour = 11:00 AM.
To finish packing and take a shower, Amy needs a total of 30 minutes + 30 minutes = 60 minutes, or 1 hour.
Therefore, Amy needs to start getting ready 1 hour before she leaves, which is 11:00 AM - 1 hour = 10:00 AM.
So, Amy needs to set her alarm to wake up by 10:00 AM in order to be on schedule.
To find out what time Amy needs to set her alarm to wake up, let's work backwards from the departure time.
Amy needs to arrive for her international flight two hours before departure. This means she needs to be at the airport 2 hours prior to 12:00 noon, which is 12:00 - 2 = 10:00 am.
Amy also needs to give herself 1 hour to drive to the airport. So, she needs to leave her house at 10:00 am - 1 hour = 9:00 am.
Before leaving for the airport, Amy needs to allow 30 minutes for a shower and 30 minutes to finish packing last-minute items. So, she needs to be ready at 9:00 am - 30 minutes (shower) - 30 minutes (packing) = 8:00 am.
Therefore, Amy needs to set her alarm to wake up by 8:00 am in order to be on schedule.