Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Justin wanted to watch a movie that came on at 8 pm that night.  His parents agreed as long as he finished his homework and chores before the movie started.  He wouldn't be home until 5 pm because of baseball practice.  He knew dinner would take 45 minutes, and he figured his homework would take 30 minutes to finish.  He needed to clean his room, which would take 30 minutes; then take out the trash, which would take about 5 minutes; and empty the dishwasher,  which would take another 10 minutes.  What was the latest time that Justin could start his chores and homework to be done by 8 pm to watch his movie?

### Response:
Justin would spend 45 minutes at dinner, 30 minutes doing homework, 30 minutes cleaning his room, 5 minutes on the trash and 10 on dishes for a total of 45+30+30+5+10 = <<45+30+30+5+10=120>>120
Justin knows that 60min is the same as 1 hour. He has 120 minutes of work so that’s 120/60 = <<120/60=2>>2 hours
Justin knows that 1 hour is 60min so 2 hours is 2*60 = <<120=120>>120 minutes
Justin must start his chores and homework no later than 6pm in order to be done by 8pm because 120 minutes / 80 minutes = <<120/80=1.5>>1.5 hours
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