Question

The temperature drops at the rate of 3 degree celcious per hour . if the temperature of a room was 30 degree celcious initially ,how many hours will it take to reach the temperature of 6 degree Celsius below 0

Step by step answer

Answer 1

Step-by-step explanation:

it will take 10 hours to reach at the temperature of 6degree celcius.

and it will take 12 hours to reach to 0 degree celcius

Answer 2

Answer:

as per question after 10hrs the temp. reduce continueusly up to 0 degree

(as each hrs it reduces 3 degree)

hence the next hrs it would be 0 degree

ie. at 11th hrs it would become -3 degree

and next hrs more it would become -6 degree

thus up to 12 hrs it would become -6 degree.