conversations.from: human
conversations.value: I need a clearer understanding of how to solve: It takes 1 hour for refrigerated dough to come to room temperature.  It takes 15 minutes to shape the dough and 2 hours to proof.  The bread takes 30 minutes to bake and 15 minutes to cool.  If the bakery opens at 6:00 am, what is the latest time the head baker can make it to the store to start working?
conversations.from: assistant
conversations.value: It takes 1 hour to bring the dough to room temp and 2 hours to proof the dough so that's 1+2 = 3 hours
  It takes 15 minutes to shape the dough, 30 minutes to bake and another 15 minutes to cool for a total of 15+30+15 = 60 minutes
  There are 60 minutes in 1 hour so that takes him 60/60 = 1 hour
  In total it takes 3+1 = 4 hours from start to finish to make the bread
  If the bakery opens at 6:00 am and it takes 4 hours to prep then the latest the head baker can show up is 6-4 = 2:00 am