Include your worksheet for this part of the Activity.
Suppose you are a private Chinese merchant who is making the trip as far as Kashgar. It is important to get to Kashgar and back as far as Dunhuang before the summer heat makes crossing the Taklamakan Desert too dangerous. To be safe you decide that the trip must be completed by June 1. If the reliable guides claim that you can average 30 miles per day, when would be the latest that you could leave Chang’an with confidence that you would make it according to your ideal time schedule?
Explain how you decided on the date on which to leave with the caravan.