Starbucks employs one worker to make both espresso drinks an

Starbucks employs one worker to make both espresso drinks and to pour drip coffee. On average, an espresso drink takes 4 minutes to make and drip coffee takes 1 minute to pour. The number of customers that order espresso drinks is 6 per hour and the number of customers that order drip coffee is 18 per hour. What is the utilization of the Starbucks coffee employee?

Solution

total time used= (Time taken to make espresso)*(Number of espressos)+(Time taken to pour drip coffee)*(Number of drip coffees)

= 4*6+1*18

=24+18

=42 minutes used per hour

Therefore, utilisation =

42/60 = 0.7 or 70%