Final answer:
At a spot in the high Andes, water boils at 76/5 °C greatly reducing the cooking speed of potatoes. The atmospheric pressure at this location is approximately 0.324 atm.
Step-by-step explanation:
The boiling point of water is affected by atmospheric pressure. At higher altitudes, where the atmospheric pressure is lower, water boils at a lower temperature. In the high Andes, where water boils at 76/5 °C, the atmospheric pressure is approximately 0.324 atm.