Her errands include a 30 min commute and 30 min grocery shopping, 10 min for dry cleaning and 20 min to grab the dog for a total of 30+30+10+20 = <<30+30+10+20=90>>90 minutes
Her errands took 90 minutes and she has another 90 minutes of cooking for a total of 90+90 = <<90+90=180>>180 minutes of chores/errands
60 minutes are in 1 hour and she has 180 minutes of work so that's 180/60 = <<180/60=3>>3 hours
She is off of work at 4:00 pm and has 3 hours of errands/chores so she won't be able to eat until 4+3 = 7:00 pm
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