You want to go off to find the lost city of Zing, but it seems that the city is about 120 miles off the coast of the Pacific Ocean. You want to take the least number of people as possible, so to save you some money. Each person can carry enough food for five days, but you can only travel 30 miles a day. You would like to reach city, stay overnight, and start back the next day. How many people, including yourself, must you hire to reach the city? PS: You may not let anybody die.
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