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.

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.
