Respuesta :
In 6 hours the total decrease in temperature is 15 degrees Celcius and it reaches -18 degrees Celcius.
Option A is the correct answer.
How do you calculate the hours to decrease the temperature to the required level?
Given that the temperature at noon is -3 degrees Celsius.
The temperature is expected to decrease by 2.5 degrees Celsius each hour until the temperature reaches -18 degrees Celsius.
Current temperature = [tex]-3^\circ \;\rm C[/tex].
Required Temperature = [tex]-18^\circ \;\rm C[/tex]
Difference between the current and required temperature = [tex]18 - 3 = 15^\circ \; \rm C[/tex]
Decrease in Temperature = [tex]2.5^\circ \;\rm C/hr[/tex]
In 6 hours, the decrease in temp. = [tex]2.5 \times 6[/tex] = [tex]15^\circ \;\rm C[/tex]
It means that in 6 hours the total decrease in temperature is 15 degrees Celcius and it reaches -18 degrees Celcius.
Hence option A is the correct answer.
To know more about temperature, follow the link given below.
https://brainly.com/question/7510619.
