First find the time to drive to the airport: 10 minutes * 5 = <<10*5=50>>50 minutes

Then find the time it takes to get through security: 15 minutes * 3 = <<15*3=45>>45 minutes

Then find the time Mary spends waiting for the plane to take off: 20 minutes * 2 = <<20*2=40>>40 minutes

Then add the time to each step to find the total time: 10 minutes + 50 minutes + 15 minutes + 45 minutes + 20 minutes + 40 minutes = <<10+50+15+45+20+40=180>>180 minutes

Then divide that amount by the number of minutes per hour to cover the total time to hours: 180 minutes / 60 minutes/hour = <<180/60=3>>3 hours

# Answer

3
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Mary is going on a business trip. It takes 10 minutes for her Uber to get to her house and 5 times longer to get to the airport. It takes 15 minutes to check her bag and three times as long to get through security. Then she has to wait for 20 minutes for her flight to start boarding and twice as long before the plane is ready to take off. How many hours will this process take total?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
Mary is going on a business trip. It takes 10 minutes for her Uber to get to her house and 5 times longer to get to the airport. It takes 15 minutes to check her bag and three times as long to get through security. Then she has to wait for 20 minutes for her flight to start boarding and twice as long before the plane is ready to take off. How many hours will this process take total?
train