Question

a certain freezing process requires that room temperature to be lowered from 60 degree Celsius and the rate of 8 degree Celsius every hour what will be the room temperature at after the process beings

Answer 1

Dear Student,
Here it is not given after how many hours so assuming temperature after 10 hours after the process begins.

Initial temperature = 60°C

Change in temperature per hour = −8°C

Change in temperature after 10 hours = (−8) × 10 = −80°C

Final temperature = 60ºC + (−80ºC) = −20°C

Regards