College

Un trabajador alimentario enfrió de forma segura una olla grande de sopa de [tex]70^{\circ} F \ (21^{\circ} C)[/tex] en dos horas.

¿Qué temperatura debe alcanzar la sopa en las próximas cuatro horas para que se enfríe correctamente?

A. [tex]45^{\circ} F \ (7^{\circ} C)[/tex]
B. [tex]51^{\circ} F \ (11^{\circ} C)[/tex]
C. [tex]41^{\circ} F \ (5^{\circ} C)[/tex]
D. [tex]55^{\circ} F \ (13^{\circ} C)[/tex]

Answer :

To ensure food safety, it's important to cool food quickly and properly. According to food safety guidelines, when cooling food like soup, the temperature needs to decrease within a specific timeframe to prevent bacterial growth.

For the soup to cool correctly from a starting temperature of 70°F (21°C), it must follow these guidelines:

1. First Stage: The temperature must decrease from the initial 70°F (21°C) to 41°F (5°C) within a total cooling time of 6 hours.

In this scenario, the worker has already cooled the soup from 70°F to 21°C (69.8°F, rounded to 70°F) in the first two hours. Now, within the next four hours, the soup should be cooled further to 41°F (5°C).

Thus, the correct temperature the soup must reach in the next four hours to cool correctly is 41°F (5°C).