###Human: Bianca worked for 12.5 hours last weekend. Celeste worked for twice that amount of time and McClain worked 8.5 hours less than Celeste. How many minutes did the 3 people work in total?, ### Assistant: Bianca = 12.5 hours
Celeste 2 * 12.5 = 25 hours
McClain = 25 - 8.5 = 16.5 hours
Total + 12.5 + 25 + 16.5 = 54 hours
54 hours * 60 minutes = 3240 minutes.
Bianca, Celeste and McClain worked a total of 3240 minutes last weekend. 
 So the answer is :  3240