Question

In a freezer, the temperature falls by 2°C every 5 minutes. In how much time water kept at 36°C will freeze into ice?​

Answer 1

Answer:

90 mins or 1 hour 30 mins

Step-by-step explanation:

Answer 2

Answer:

The maximum temperature of ice is 0 degrees Celsius

So, from 36 we have to keep subtracting 2, until we get 0 or less than 0

We can write this as (36-0)/2 = 18 times

So, total time taken = 18*5 = 90 minutes

= 1 hr 30 min