Lisa wants to carve the 7kg Turkey at 8pm.
Allow 20 minutes per kg + 90 minutes.
Allow to stand for 20 minutes before carving.
At what time should Lisa start cooking the turkey.
7kg @ 8pm m = minutes h = hours
20m/kg*7kg = 140m + 90m + 20m = 250m. 250m*1/60h/m= 4 hours & 10 minutes. 8pm - 4hours & 10 minutes = 3:50pm
or:
let mass m = 7kg, time final Tf = 8pm where 8pm is 1200 minutes, x = 20 minutes per kilogram (minutes/kg)
Time Tf (final) = 8pm = 20 hours * 60 minutes/hour = 1200 minutes.
To (initial) = Tf-xm+90+20 m=7kg
To = Tf - (20 minutes/kilogram*7 kilogram) + (90+20)
To = Tf - 140 minutes + 110 minutes
To = Tf - 250 minutes
To = 1200 minutes -250 minutes = 950 minutes
950 minutes * (1 hour / 60 minutes) = 15.83333
15 hours = 3 pm,
.83333 * (60 minutes)) = 50 minutes
[3:50pm]
