Question

8. A certain freezing process requires that room temperature be lowered from 45°C at the rate of 5
every hour. What will be the room temperature after 5 hours​

Answer 1

Solution :-

As given :-

▪️Initial temperature of room = 45° C

▪️Decrease in temperature per hour = 5°C

▪️Time for which to be calculated = 5 hrs

Now as Per hours 5° C decreases

Hence temperature decrease after 5 hrs

= 5 × 5

= 25° C

Now as the initial temperature was 45°C

Then Temperature after 5hrs

= Initial temperature - Temperature change

= 45 - 25

= 20°C

So temperature of room will be 20°C