Question

A cooling machine requires that room temperature
to be lowered from 50°C at the rate of 5°C every
hour. What will be the room temperature after 8
hours after process begins?
​

Answer 1

Room temperature at the beginning of the process = 50°C

Rate of lowering the temperature = 5°C every hour

Temperature lowered after 8 hours= 5 × 8 = 40°C

Room temperature after 8 hours = 50°C - 40°C = 10°C