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BEBRAS 2017 Grade 7-8 Round 2 Ext Question 9

BEBRAS · BEBRAS 2017 Grade 7-8 Round 2 Ext

Question 9

Leslie transports logs through canals from S to T in one day, earning one beaver dollar per delivered log. Each directed arrow has a daily log capacity. Logs move only along arrow directions; four intermediate stations lie between S and T.

Question illustration

What is the largest number of logs deliverable in one day?
  1. 4
  2. 5
  3. 6
  4. 7