Praxis 5003 Practice Test Practice Question
A fruit stand sells apples for $0.50 each and oranges for $0.25 each. A customer purchases n apples and 6 oranges for a total cost that is less than $8.00. Which of the following must be true?
Correct Answer: C
Rationale: To determine the total cost, the equation is \(0.50n + 0.25 \times 6\), simplifying to \(0.50n + 1.50\). For the total cost to be less than $8.00, it must hold that \(0.50n + 1.50 < 8\). Therefore, option C is valid.
Option A, \(n + 6 < 8\), does not account for the prices of the fruits; it merely adds quantities, which is irrelevant to the cost constraint.
Option B, \(n + 6 > 8\), is also incorrect as it implies a higher quantity without considering cost, which does not satisfy the total cost condition.
Option D, \(0.5n + 1.5 > 8\), contradicts the requirement of the total cost being less than $8.00.
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