Tammy has completed 52 eliveries so far this week. she needs to make 65 eliveries for the week. what percentage of her deliveries has tammy completed?

Tammy has completed 80% of her deliveries

Step-by-step 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 = 80%

So, Tammy has completed 80% of her deliveries