Question

You wake up at 6:50
a.m. and spend 30 minutes getting dressed. you have a 20 minute walk to school. what time do you arrive at school?

Answer 1

you arrive at 7:40 a.m. at the latest. It says you have 20 minutes, so I'm assuming that also means that's how long it takes you.
6:50+:30 = 7:20+:20 = 7:40a.m.