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IKMC 2027 - Grades 11-12 - Self-study SET 8 - Thematic Batch 3 Question 20

IKMC · IKMC 2027 - Grades 11-12 - Self-study SET 8 - Thematic Batch 3

Question 20

Two pet shops sell Krefft and Flatback turtles. The first has 50 Krefft and 10 Flatback turtles; the second has 60 Krefft and 20 Flatback turtles. Mandy randomly chooses one of the shops. What is the probability that she buys a Krefft turtle?

Original printed choices: A) 19/24; B) 11/14; C) 7/12; D) 5/8; E) 23/24

Editorial task: Explain what information is missing or inconsistent, then derive the source’s intended answer under clearly stated additional assumptions.

Question illustration