Paul is trying to set his alarm clock for tomorrow morning. He needs 30 minutes to get ready for school and it takes him 10 minutes to bike to school. If school starts at 8:40 a.m., and he would like to be 5 minutes early, what is the time he should set his alarm clock?

Answer 1

he needs to get up 30+10+5 = 45 minutes before school
so, ...

Answer 2

you add 30and 10 and then you sub tract that from the time and he eed to wake up at 8:00