The trip to work takes Ms. Tran 7/12 of an hour. if she makes this trip 10 times a week, how much time does she spend commuting

Time=10 trips * (7/12 hours/1 trip) = 70/12 hours=35/6 hours.

1 hour=60 minutes, so:

35/6 hours * (60 minutes / 1 hour) = 350 minutes

Answer: She spend communting 350 minutes.