Answer:
Tammy has completed 80% of her deliveries
Explanation:
The percentage of deliveries can be calculated using a rule of three in which we know that 65 deliveries represent the 100%, then what is the percentage for 52 deliveries. This is writing as:
65 deliveries -------------------------- 100%
52 deliveries -------------------------- X
Where X is the percentage that Tammy has completed. Solving for X we get:
![X = (52*100)/(65)](https://img.qammunity.org/2020/formulas/mathematics/high-school/m6ni55lxy6why0082n7heiifbnfiwav0re.png)
X = 80%
So, Tammy has completed 80% of her deliveries