Question

The rate of decreasing the temperature in a refrigerator is 3°C per minute. A thing whose temperature is 25°C, is kept in refrigerator. After how much time, the temperature of thing will be – 2°C ?

Answer 1

Answer: 9 Minutes

Current temperature of the thing = 25°C

Temperature to achieved = -2°C

Temperature decreased per minute = 3°C

Total change in temperature = 25°C - (-2°C) = 27°C

Therefore, time taken to change the temperature = $\frac{27}{3} = 9 Minutes$