Question

When a cup of coffee at 100 degree Celsius cools down ,it loses 12%of its current temperature

per minute. What will the temperature be after 10 minutes.

Answer 1

Temperature after 10 minute = 27.9 degree Celsius

Explanation:

Current temperature, P = 100 degree Celsius

% rate in temperature loses = 12% per minute = 0.12

Time, t = 10 minutes

Temperature after t minutes ,

`= P ( 1 - r )^t\\\\=100( 1 - 0.12)^10\\\\=100(0.278500976)\\\\=27.85`

= 27.9 degree Celsius