Query about Question 4 from "PrepSwift: Mixed Numbers" [4153]

[Endless_Misery]

https://prepswift.gregmat.com/quizzes/quiz/prepswift-mixed-numbers (Question 4)

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For the last question in this quiz:

What is the relevance of a and b being greater than 3? In the quiz explanation, it looks like because they are greater than 3, both fractions are positive.

But if a and b were both 2, they would still be positive fractions (col A - 5/2, col B - 5)

[cylverixxx]

@Endless_Misery

What is the relevance of a and b being greater than 3?

Nothing specific. It’s just a constraint provided in the question. It could be anything, right?

@Endless_Misery

But if a and b were both 2

You’re right; to ensure positivity, a,b \geq 2 is sufficient. Nonetheless, they aren’t claiming to have chosen the lowest possible values of an and b for which the quantities are positive.