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.
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
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
When Math Happens 
I agree. It’s something else to think about and estimate as they work through the problem. Thanks for your comment!
This was the best ever I cant believe how fun this was
Thanks for the kind words! I’m glad it went well!