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Home > AC > Chapter 12 > Lesson 12.4.4 > Problem 12-106

12-106.

Write and solve an equation to answer the question below.

Lorena and Lena both work in the library. Lorena has already returned books to the shelves and can shelve books an hour on average. Lena, on the other hand, has already returned books to the shelves and can shelve books per hour on average. If together they started with a total of books to return on the shelves, how much longer should it take them?

Write equations to represent the situations.

 # of books Lorena shelves
# of books Lena shelves

Solve for .

hours