Answer
Justin should round this to six ounces and two-thirds of an ounce for ech person.
Step-by-step explanation
To perfect this, we need to do the division ourselves
60 ÷ 9
= (60/9)
Divide both numerator and denominator by 3
(60/9)
= (20/3)
We can then write this as a mixed fraction, (20/3) will give 6, and a remainder of 2.
(20/3) = 6 (2/3)
So, the best way for Justin to do this is to give each person 6 ounces of lemonade (that gives 54 ounces of lemonade in all), then add two-thirds of an ounce of lemonade to each person's own (the remaining 6 ounces will finish perfectly in this manner).
Hope this Helps!!!