Weekend Math Challenge

Weekend Math Challenge
Connor was scared as he knocked on the door. A low voice said, "Before I open the door, you must say the secret number."
Here are some clues:

• It is greater than 275.
• It is less than 325.
• If you count by 5's, you say its name.
• It can be divided evenly by 3 and 9.

What is the secret number? Write your answer and name on a piece of paper and give it to Ms. Earl on Monday.