Where is John?

Team: 
beaglebeat
Topic: Proportional Reasoning
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RRRINNGGG~ After waking up and finding herself late to a math lecture, Kore is stuck in her tutoring class trying to solve a problem. Time is ticking for her; if she doesn't provide a correct solution, her tutoring teacher will have some punishments for her. What will she do? And who will help her?

Common Core Standards: 6.RP.3
Problem #: 
52 (2011-2012)
Problem Difficulty Level: 3 [?]