### Home > PC3 > Chapter 5 > Lesson 5.2.1 > Problem5-48

5-48.

Usually, Dolores has to stock the shelves by herself and it takes her $7.2$ hours. Today Camille helped Dolores and they were able to finish the task in $2.8$ hours. How long would it have taken Camille if she were working alone?   Homework Help ✎

What is Dolores' rate in tasks/hour?

The time in this situation is $2.8$ hours.
(rate)(time) = amount of task completed

$(\text{Dolores'rate})(2.8)+(\text{Camille's rate})(2.8)=1\text{ complete task}$