Question

A freezing system starts cooling the room at the rate of 6 per hour if at the beginning temperature of the room is 33 degree Celsius then find the number of the hours it takes to lower down the room temperature to -3 degree celcius​​

Answer 1

It will take 6 hrs

As,

33°C-(-3°C)

= 36°C

Now will divide 36°C by the rate per hour of frezer system(6),

36÷6

=6hrs