Question

tea in a cup takes 20 min to cool from 85 to 75 how Mich time its takes to cool from 75 to 65 if the surrounding temperature is 30​

Answer 1

Answer:

Putting second condition in above equation we get : Therefore , the time taken by it to cool from 65 degree C to 55 degree C is 1 min 36 sec .

Answer 2

Answer:

Therefore , Putting second condition in above equation we get : Therefore , the time taken by it to cool from 65 degree C to 55 degree C is 1 min 36 sec