ISEE Mathematics Achievement Question 33: Answer and Explanation
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Question: 33
5. An adult's ski lift ticket costs twice as much as a child's. If a family of three children and two adults can ski for $49, what is the cost of an adult ticket
- A. $7
- B. $10
- C. $12
- D. $14
Correct Answer: D
Explanation:
The correct answer is (D). A child's ticket costs x dollars. Each adult ticket costs twice as much, or 2x dollars. 2(2x) = 2 adult tickets; 3x = 3 children's tickets. Write a simple equation, and solve for x.
$7 is the cost of a child's ticket; $14 is the cost of an adult's ticket.