A Trip to Mos Eisley

Team: 
Yellowjackets
Topic: Probability, Counting & Combinatorics
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A group of people are going to Mos Eisley and the executives running the trip want to know how many people are going based on how much money they have earned, but there is a catch. For every person that goes after 15 people, the price per person decreases 5 dollars. They must figure out how to get around this hurdle to know how many people are going.

Common Core Standards: 7.SP.8
Problem #: 
234 (2017-2018)
Problem Difficulty Level: 3 [?]
Keyword tags: