In "The Great Gatsby", how old are Myrtle Wilson, George and Gatsby?Can you please give page numbers?

When Nick first sees Myrtle when Tom took him to Wilson's garage, Nick says she is a woman in her mid-thirties.

"His voice faded off and Tom glanced impatiently arounf the garage. Then I heard footsteps on a stairs, and in a moment the thickish figure of a woman blocked out the light from the office door. She was in the middle thirties......"

This quote was on the lower half of page 25 of my book, not sure if you have the same copy.