Answer:
The width of the poster will be 17 inches
Explanation:
The area = 204 square inches
Note:
- both length and width are whole numbers
- The width of the poster is greater than 11 inches
- The width is a prime
The prime numbers greater than 11 are
13, 17, 19, 23, 29, ...,
all these numbers divide 204 with a remainder except for 17
Therefore, the width will be 17 inches, and the length will be 12
since 17 divides 204 into 12 places