HELP!! another seventh/sixth grade math question?

Question

Ok Another math question i cant crack, here it goes:

You are putting up a 90-foot-long fence in your back yard. According to the manufacturer's instructions, the fence posts should be equally spaced along the length of the yard. List all the possible spacing options if the amount of space between the posts is a whole number of feet. If the posts should be spaced between 8 feet and 14 feet apart, how far apart should your posts be?

Answer 1

9 ft because 90/10 equals 9 which is a whole number..no decimals or anything