## Act 1

1. Will the elevator or stairs be faster?

2. Write down a guess.

## Act 2

3. What information would be useful to figure this out?

4. Write down some questions you have in your head right now.

## Act 3

## Sequel

5. At what floor would both the elevator and stairs take the same amount of time?

**Common Core Standards**

6.RP

Understand ratio concepts and use ratio reasoning to solve problems.

HSA.REI.C.6

Solve systems of linear equations exactly and approximately (e.g., with graphs), focusing on pairs of linear equations in two variables.

**TEKS**

6.5(A)

represent mathematical and real-world problems involving ratios and rates using scale factors, tables, graphs, and proportions

A.5(C)

solve systems of two linear equations with two variables for mathematical and real-world problems