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Problem 8 Easy
Emmy says to Max, “I ordered math club sweatshirts today." Max asks, “How much did each shirt cost?" Emmy responds, “I'll give you a hint. The total cost was . , where and are digits and ." After a pause, Max says, “That was a good price." What is ?
- A.
- B.
- C.
- D.
- E.
Answer:C
Solution
Given , we need and
From , we get . Since is even, is even, so . Thus, .
From , we get , so .
From , we get , which means is odd.
Therefore .
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