Mr. Smith was deciding when to get up in the morning. He needed

45 minutes to get ready for school. His bus ride took 25 minutes.
He wanted to get to school 20 minutes early. If school starts at
8:30, what time should he get up?

1 answer

get to school at 8:10
so get on the bus at 8:10 - 25 minutes = 7:70 - 25 = 7:45
start putting on shoes at 7:45 - 45 min = 7:00
or
:45 + :25 + :20 = :90
8:30 - :90 = 7:90 - :90 = 7:00