Question

A certain freezing process requires that room temperature to be lowered from 38°C at the rate of 4°C per hour. What will be the room temperature 12 hours after the process begins?

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Answer 1

Rate is 4 degree C per hour

so in 12 hours

12*4 = 48 degrees will be reduced

So 38-48 = -10°C is the answer.

Answer 2

Temperature getting lowered at the rate = 4°

Temperature decreased in one HR=38°

Temperature after 12 hrs= 38-(4×12)=38-48=(-10)°