Kathy stood on the middle rung of a ladder. She climbed up 3

Last updated: 8/11/2022

Kathy stood on the middle rung of a ladder. She climbed up 3 rungs, moved down 5 rungs, and then climbed up 9 rungs. Then she climbed up the remaining 3 rungs to the top of the ladder. How many rungs are there in the whole ladder?