In: Advanced Math
For the following exercises, use this scenario: A turkey is taken out of the oven with an internal temperature of 165° Fahrenheit and is allowed to cool in a 75° F room. After half an hour, the internal temperature of the turkey is 145° F.
To the nearest minute, how long will it take the turkey to cool to 110° F?
Consider that a turkey is taken out of the oven with an internal temperature of 165°F and allowed to cool in a 75°F room. After 30 minutes the internal temperature of the turkey was145°F.
The internal temperature of the turkey after t minutes is
T(t) = 90e-0.0084t + 75
Put T(t) = 110
So,
90e-0.0084t + 75 = 110
90e-0.0084t = 35
t = 1/0.0084{ln(35/90)}
≈ 112
Hence, after 112 minutes the turkey will cool to 110°F.
Hence, after 112 minutes the turkey will cool to 110°F.